Plastic & Die-cast Zinc Easy Screw-In Style nchors D ESY SCREW-IN NCOR ITW Buildex* D Ultimate Tensile Strength Ultimate Shear Strength ead nchor ength Maximum Fixture Thickness Gypsum Thickness Gypsum Thickness 3/8" 1/2" 5/8" 3/8" 1/2" 5/8" 1/2 1-5/8 3/4 40 50 75 135 150 200 nchor Spacing Drill ole Tensile Strength tubular device, tapered from top to bottom, with a countersunk lip at the top end, two or three drill points at the bottom, and a deep cutting thread around the outside of the anchor body. This anchor drills its own hole in, and works in any thickness of drywall, without tearing the paper coating. It can easily be backed out of its hole with a #2 screwdriver bit. It's designed for use in lightweight applications, such as curtain hardware, small pictures and lightweight signs. It should not be used for overhead applications. The nylon variety is used when requiring a non-conductive anchor. Metal: Die-cast zinc Plastic: Injection molded Nylon nchors should be 18-24 inches apart from each other (measured from the center of the anchor). Can be used in wood after drilling a 5/16" hole. Can be used in aerated concrete after drilling a 3/8" hole. The suggested safe working load is one-fourth the average proof test loads shown in the above table. Specifications are for reference purposes only. *ITW Buildex is the original writer of these anchor specifications.
nchors Split Drive FT ED PN ED SPIT DRIVE BOT NCORS FF-S-325, Group VI nchor () Nominal Stem engths Drill Bit Proof Test (3000 psi. Concrete) Minimum Embedment Test oad, lbs. 3/16 1, 1-1/4, 1-1/2, 2, 2-1/2 3/16 3/4 480 1/4 1-1/4, 1-1/2, 2, 2-1/2, 3, 3-1/2 1/4 1 925 5/16 1-1/2, 2, 2-1/2, 3 5/16 1 1/2 1600 3/8 2, 2-1/2, 3, 3-1/2, 6 3/8 1 3/4 2600 1/2 3, 3-1/2, 4, 6 1/2 2 7/16 5000 one-piece steel anchor with two sheared or "split" halves at the base which are pre-expanded to a specific size. Split drive anchors are available in flat head and pan head styles. light-duty anchor for use with dead loads in concrete or stone. The opening in the base of the anchor is of a size which, when under pressure, the anchor will try to regain, which creates the pressure on the inner walls of the hole, holding the fastening in place. The friction caused by this expansion can compensate for poor grades of concrete. igh grade, heat treated alloy steel nchor Spacing Should be at least ten anchor diameters between anchors and a minimum of five anchor diameters from the edge of the work surface. Tensile and Shear Strengths Split drive anchors shall not be removable or show evidence of failure when subjected to axially applied proof test loads as specified in the above table when set in concrete of 3000 psi. compressive strength. The suggested safe working load is one-fourth the loads shown in the above table.
nchors Plastic Toggles PSTIC TOGGE NCORS FF-S-325 Group V, Type 2, Class 4 Toggle Screw ole Wall Thickness Tensile Strength (lb.) Shear Strength (lb.) Short 8 5/16 3/8 42 85 ong 8 30 75 5/16 1/2 10 58 107 8 50 126 Extra ong 10 5/16 5/8 79 138 14 83 145 nchor Spacing Tensile and Shear Strengths one-piece, plastic anchor with a cylindrical body and four legs. The hole through the center of the body has ribs on the outside to hold the anchor in place during installation. When a tapping screw is driven into the toggle, the legs collapse which forms a tongue. s the screw is driven through the body, it pulls in and expands the legs. Plastic toggles are intended for lightweight duty in hollow walls (wallboard or plaster), ie. drapery rods, junction boxes, soap dishes, towel bars, etc.. The anchor remains in place even after the screw is removed. igh strength nylon nchors should be spaced 18-24 inches center to center (spacing can be closer in high-density material). The suggested safe working load is one-fourth the average maximum proof test loads listed in the above table.
Ribbed with ip Plastic ollow Wall nchors PSTIC OOW W NCORS Part Number Screw ength of nchor Drill 10P 6-8-10 15/16 3/16 12P 10-12 1 1/8 1/4 16P 14-16 1 7/16 5/16 n injection-molded anchor with a ribbed shank which resists "backing-out" after installation and longitudinal slits along the shaft which allows the anchor to expand when a screw is inserted. Plastic anchors are a more economical, light-duty part than steel hollow wall anchors. They can be used in sheetrock, plaster, brickwork, concrete or tile. The design of the collar allows plastic anchors to also be used in hollow materials. For use with self-tapping or wood screws. Polyvinylchloride or Polyethylene plastic Pullout Values* 50 lbs. Color Plastic anchors are usually, but not exclusively, supplied in white. *Recommended safe working load is one-fourth of the proof test load.
nchors Nail In Nylon NYON NI NCORS Nylon nchor ead Style ead Minimum ole Depth Ultimate Tensile Strength In 3000 psi. Strength Concrete FF-S-325, Group V, Type 2, Class 4 In ollow 3/16 x 1 Round 3/8 1-1/4 283 178 3/16 x 1 Flat 3/8 1-1/4 283 178 3/16 x 1 Mushroom 9/16 1-1/4 283 178 3/16 x 1-1/2 Flat 3/8 1-3/4 335 193 3/16 x 1-1/2 Round 3/8 1-3/4 335 193 1/4 x 1 Round 7/16 1-1/4 261 155 1/4 x 1 Flat 7/16 1-1/4 261 155 1/4 x 1 Mushroom 9/16 1-1/4 261 155 1/4 x 1-1/2 Flat 7/16 1-3/4 320 188 1/4 x 1-1/2 Round 7/16 1-3/4 320 188 1/4 x 1-1/2 Mushroom 9/16 1-3/4 320 188 nchor Spacing Tensile Strength fastening system which consists of two parts: (1) a nylon piece similar in design to a blind rivet which has a cylindrical shank split on two sides, 180 apart, extending from the bottom of the shank up most of the distance to the head. The shank has several ribs extending completely around its circumference. Mushroom, pan and flat head styles are available; (2) a steel pin expander which passes through a concentric channel extending from an opening in the top of the head of the nylon piece down into the shank to a point just below the spot where the split ends below the head. The pin has a slot across the top of its head, a chiseled point similar to a nail, and threads on its own shank which helps to lock the anchor in place upon installation. Installation is achieved by inserting the end of the nylon shank into a pre-drilled hole and hammering the head of the nail until it meets the head of the anchor body. Driving the nail through the body expands the split ends which allows the ribs to grip the wall of the prepared hole. This is a light duty anchor for use in solid materials such as concrete, brick and block, preferred when fixtures must be attached without chipping the fixture or the masonry. Can also be used like a toggle bolt in wallboard or plaster, or as a blind rivet in joining several thicknesses of material together, especially in applications subject to vibration. The nylon withstands temperatures from -40 F to 170 F. Body: Injection molded thermoplastic nylon Expander Pin: ISI 1018-1021 or equivalent cold rolled steel, zinc plated nchors should be spaced 18-24 inches apart (measured from the center of the anchor) Nylon nail anchors shall not be removable or show evidence of failure when subjected to axially applied proof test loads as specified in the above table when set in concrete of 3000 psi. compressive strength. The suggested safe working load is one-fourth the loads shown in the above table.
nchors ead Wood Screw Style D ED WOOD SCREW NCOR FF-S-325 Group IV, Type 1 D Proof Test oads (pounds) Wood Screw Fractional Screw Nominal Outside engths nchor engths (inches) 3/4" 1" 1 1/2" 6 1/8-3/16" 1/4" 3/4, 1, 1 1/2 80 88 100 8 1/8-3/16" 1/4" 3/4, 1, 1 1/2 88 122 192 10 3/16-1/4" 5/16" 3/4, 1, 1 1/2 100 160 540 12 3/16-1/4" 5/16" 3/4, 1, 1 1/2 104 196 624 14 1/4-5/16" 3/8" 1, 1 1/2, 2 192 360 800 16 5/16" 3/8" 1, 1 1/2, 2 ---- 380 900 18 5/16" 3/8" 1, 1 1/2, 2 ---- 412 940 nchor Spacing Depth of ole Tensile Strength hollow, cylindrical anchor which is split from the bottom up for the majority of its length and has longitudinal ribs for part of its length. The diameter at the split (bottom) end is tapered; the top end is flared to a wider diameter than the remainder of the anchor's body. Used with wood screws, lags and tapping screws for light duty applications in brick, block, drywall, masonry or concrete. Will conform to irregular, out-of-round holes. ead alloy nchors should be installed a minimum of ten anchor diameters between each other and a minimum of five anchor diameters from the edge. Sould be at least 1/4" longer than the length of the anchor. The suggested safe working load is one-fourth the average proof test loads shown in the above table.
Steel ammer Drive nchors MMER DRIVE NCORS FF-S-325, Group V, Type 2, Class 3 Basic Grip Range Proof Test oad* ole ength Max Min Pounds 3/16 7/8 3/16 1/8 0 240 1/4 3/4 1/4 1/8 0 ** 1/4 1 1/4 1/4 1/8 800 1/4 1 1/4 1/4 1/2 1/4 1000 1/4 1 1/2 1/4 3/4 1/2 1200 1/4 2 1/4 1 1/4 3/4 ** **Industry standards do not list tensile values for this size. *Recommended safe working load is one-fourth of the proof test load. two-piece fastener consisting of a tubular stem with a dome or flat-fillister shaped head and a nail which is driven through the hollow center of the stem of the anchor. The stem is slit longitudinally on opposite sides from the bottom of the shank to the place where the point of the nail extends into the stem. ammer drives are considered to be light-duty anchors. They are designed for attaching termination bar to solid concrete, solid brick, block or masonry walls. Its advantages include ease of installation, its immediate loading capabilities and the tamperresistant nature of the finished assembly. nchor: Zinc lloy Pin: Zinc-plated carbon steel Proof oad ammer drive anchors shall not be removable when set in concrete of 3000 psi compressive strength and subjected to the test loads in an axial direction, as specified in the above table. The masonry shall show no evidence of failure attributable to the anchor. Plating See ppendix- for plating information.
Cap Screws & Bolts ead and Thread Dimensions Grades-5 & 8 Cap Screws J J F E E G o 30 +0-15 Y Cut Thread T o 30 +0-15 Y T Rolled Thread UNDERSIDE OF ED ength of a cap screw is measured from the underhead bearing surface to the extreme end of the screw. EX CP SCREWS SME B18.2.1-1996 E F G J T Y Nominal or Basic Product Body Width cross Flats Width cross Corners ead eight Wrenching eight Thread ength For Screw engths 6 in. For Screw engths > 6 in. Transition Thread ength Max Min Basic Max Min Max Min Basic Max Min Min Ref Ref Max 1/4 0.2500 0.2500 0.2450 7/16 0.438 0.428 0.505 0.488 5/32 0.163 0.150 0.106 0.750 1.000 0.250 5/16 0.3125 0.3125 0.3065 1/2 0.500 0.489 0.577 0.557 13/64 0.211.0195 0.140 0.875 1.125 0.278 3/8 0.3750 0.3750 0.3690 9/16 0.562 0.551 0.650 0.628 15/64 0.243 0.226 0.160 1.000 1.250 0.312 7/16 0.4375 0.4375 0.4305 5/8 0.625 0.612 0.722 0.698 9/32 0.291 0.272 0.195 1.125 1.375 0.357 1/2 0.5000 0.5000 0.4930 3/4 0.750 0.736 0.866 0.840 5/16 0.323 0.302 0.215 1.250 1.500 0.385 9/16 0.5625 0.5625 0.5545 13/16 0.812 0.798 0.938 0.910 23/64 0.371 0.348 0.250 1.375 1.625 0.417 5/8 0.6250 0.6250 0.6170 15/16 0.938 0.922 1.083 1.051 25/64 0.403 0.378 0.269 1.500 1.750 0.455 3/4 0.7500 0.7500 0.7410 1-1/8 1.125 1.100 1.299 1.254 15/32 0.483 0.455 0.324 1.750 2.000 0.500 7/8 0.8750 0.8750 0.8660 1-5/16 1.312 1.285 1.516 1.465 35/64 0.563 0.531 0.378 2.000 2.250 0.556 1 1.0000 1.0000 0.9900 1-1/2 1.500 1.469 1.732 1.675 39/64 0.627 0.591 0.416 2.250 2.500 0.625 1-1/8 1.1250 1.1250 1.1140 1-11/16 1.688 1.631 1.949 1.859 11/16 0.718 0.658 0.461 2.500 2.750 0.714 1-1/4 1.2500 1.2500 1.2390 1-7/8 1.875 1.812 2.165 2.066 25/32 0.813 0.749 0.530 2.750 3.000 0.714 1-1/2 1.5000 1.5000 1.4880 2-1/4 2.250 2.175 2.598 2.480 1-5/16 0.974 0.902 0.640 3.250 3.500 0.833 Nominal Screw Up to 1 in., incl. Over 1 in. to 2-1/2 in., incl. Nominal Screw ength Over 2-1/2 in. to 4 in., incl. Over 4 in. to 6 in., incl. onger than 6 in. Tolerance on ength 1/4 to 3/8-0.03-0.04-0.06-0.10-0.18 7/16 and 1/2-0.03-0.06-0.08-0.10-0.18 9/16 to 3/4-0.03-0.08-0.10-0.10-0.18 7/8 and 1... -0.10-0.14-0.16-0.20 1-1/8 to 1-1/2... -0.12-0.16-0.18-0.22
Grades 5 & 8 Cap Screws eat Treatment Core ardness Surface ardness Proof oad Yield Strength* Tensile Strength Elongation* Reduction of rea* Plating Mechanical & Performance Data GRDE-5 EX CP SCREW cap screw made from medium carbon steel and heat-treated. Bolts & Cap Screws as greater tensile strength than a Grade-2. Yield-to-tensile ratio is the lowest of all heat treated steels. Grade-5 cap screws shall be heat treated, oil or water quenched, at the option of the manufacturer, and tempered at a minimum tempering temperature of 800 F. Medium carbon steel. Use of an alloy steel is also acceptable. 1/4 through 1 in. diameter, all lengths: Rockwell C25 - C34. 1-1/8 through 1-1/2 in. diameter, all lengths: Rockwell C19 - C30. 1/4 through 1 in. diameter, all lengths: Rockwell 30N54 maximum. 1-1/8 through 1-1/2 in. diameter, all lengths: Rockwell 30N50 maximum. 1/4 through 1 in. diameter, all lengths: 85,000 psi. 1-1/8 through 1-1/2 in. diameter, all lengths: 74,000 psi. 1/4 through 1 in. diameter, all lengths: 92,000 psi. minimum 1-1/8 through 1-1/2 in. diameter, all lengths: 81,000 psi. minimum 1/4 through 1 in. diameter, all lengths: 120,000 psi. minimum 1-1/8 through 1-1/2 in. diameter, all lengths: 105,000 psi. minimum 14% minimum (all diameters) 35% minimum (all sizes) See ppendix- for plating information. x ** GRDE-8 EX CP SCREW x ** eat Treatment cap screw made from medium carbon alloy steel and heat-treated. as greater tensile strength than a Grade-5. Designed for use in high stress applications. See specifications below for more information on how the Grade-8 exceeds the strength of a Grade-5. Grade-8 cap screws shall be heat-treated, oil-quenched and tempered at a minimum temperature of 800 F. Medium carbon alloy steel. Note: For diameters 1/4 through 7/16 inch, it is permissible to use ISI 1541 steel. Core ardness 1/4 through 1-1/2 in. diameter, all lengths: Rockwell C33 - C39. Surface ardness Proof oad Yield Strength* Tensile Strength Elongation* Reduction of rea* Plating 1/4 through 1-1/2 in. diameter, all lengths: Rockwell 30N58.6 maximum. 1/4 through 1-1/2 in. diameter, all lengths: 120,000 psi. 1/4 through 1-1/2 in. diameter, all lengths: 130,000 psi. minimum 1/4 through 1-1/2 in. diameter, all lengths: 150,000 psi. minimum 12% minimum (all diameters) 35% minimum (all sizes) See ppendix- for plating information. *These properties are tested only on machined specimens when the testing machine cannot provide for full testing of the parts. **Product standards require the manufacturer s head marking to appear on the top of all cap screws 1/4 diameter and larger. X represents one location such a marking may appear.
Cap Screws & Bolts ead and Thread Dimensions ex Cap Screws J J F E E G o 30 +0-15 Y Cut Thread T o 30 +0-15 Y T Rolled Thread UNDERSIDE OF ED ength of a cap screw is measured from the underhead bearing surface to the extreme end of the screw. EX CP SCREWS SME B18.2.1-1996 E F G J T Y Nominal or Basic Product Body Width cross Flats Width cross Corners ead eight Wrenching eight Thread ength For Screw engths 6 in. For Screw engths > 6 in. Transition Thread ength Max Min Basic Max Min Max Min Basic Max Min Min Ref Ref Max 1/4 0.2500 0.2500 0.2450 7/16 0.438 0.428 0.505 0.488 5/32 0.163 0.150 0.106 0.750 1.000 0.250 5/16 0.3125 0.3125 0.3065 1/2 0.500 0.489 0.577 0.557 13/64 0.211.0195 0.140 0.875 1.125 0.278 3/8 0.3750 0.3750 0.3690 9/16 0.562 0.551 0.650 0.628 15/64 0.243 0.226 0.160 1.000 1.250 0.312 7/16 0.4375 0.4375 0.4305 5/8 0.625 0.612 0.722 0.698 9/32 0.291 0.272 0.195 1.125 1.375 0.357 1/2 0.5000 0.5000 0.4930 3/4 0.750 0.736 0.866 0.840 5/16 0.323 0.302 0.215 1.250 1.500 0.385 9/16 0.5625 0.5625 0.5545 13/16 0.812 0.798 0.938 0.910 23/64 0.371 0.348 0.250 1.375 1.625 0.417 5/8 0.6250 0.6250 0.6170 15/16 0.938 0.922 1.083 1.051 25/64 0.403 0.378 0.269 1.500 1.750 0.455 3/4 0.7500 0.7500 0.7410 1-1/8 1.125 1.100 1.299 1.254 15/32 0.483 0.455 0.324 1.750 2.000 0.500 7/8 0.8750 0.8750 0.8660 1-5/16 1.312 1.285 1.516 1.465 35/64 0.563 0.531 0.378 2.000 2.250 0.556 1 1.0000 1.0000 0.9900 1-1/2 1.500 1.469 1.732 1.675 39/64 0.627 0.591 0.416 2.250 2.500 0.625 1-1/8 1.1250 1.1250 1.1140 1-11/16 1.688 1.631 1.949 1.859 11/16 0.718 0.658 0.461 2.500 2.750 0.714 1-1/4 1.2500 1.2500 1.2390 1-7/8 1.875 1.812 2.165 2.066 25/32 0.813 0.749 0.530 2.750 3.000 0.714 1-1/2 1.5000 1.5000 1.4880 2-1/4 2.250 2.175 2.598 2.480 1-5/16 0.974 0.902 0.640 3.250 3.500 0.833 Nominal Screw Up to 1 in., incl. Over 1 in. to 2-1/2 in., incl. Nominal Screw ength Over 2-1/2 in. to 4 in., incl. Over 4 in. to 6 in., incl. onger than 6 in. Tolerance on ength 1/4 to 3/8-0.03-0.04-0.06-0.10-0.18 7/16 and 1/2-0.03-0.06-0.08-0.10-0.18 9/16 to 3/4-0.03-0.08-0.10-0.10-0.18 7/8 and 1... -0.10-0.14-0.16-0.20 1-1/8 to 1-1/2... -0.12-0.16-0.18-0.22
ex Cap Screws, Gr-2, 18-8 & 316 Stainless Mechanical & Bolts & Cap Screws Performance Data GRDE-2 EX CP SCREW x ** ardness Proof oad Yield Strength* Tensile Strength Elongation* Reduction of rea* Plating low or medium carbon steel, externally threaded mechanical device 1/4" diameter or larger, with a trimmed hex head and a washer face on the bearing surface. Economical for use in non-critical applications where the fastener is not subject to extreme temperatures or stress beyond the limits listed herein. ISI 1006-1050 or equivalent steel. 1/4 through 3/4 in. diameter, 6 in. and shorter in length: Rockwell B80 - B100. 1/4 through 3/4 in. diameter, over 6 in. in length: Rockwell B70 - B100. 7/8 through 1-1/2 in. diameter, all lengths: Rockwell B70 - B100. 1/4 through 3/4 in. diameter, 6 in. and shorter in length: 55,000 psi. 1/4 through 3/4 in. diameter, over 6 in. in length: 33,000 psi. 7/8 through 1-1/2 in. diameter, all lengths: 33,000 psi. 1/4 through 3/4 in. diameter, 6 in. and shorter in length: 57,000 psi. minimum. 1/4 through 3/4 in. diameter, over 6 in. in length: 36,000 psi. minimum. 7/8 through 1-1/2 in. diameter, all lengths: 36,000 psi. minimum. 1/4 through 3/4 in. diameter, 6 in. and shorter in length: 74,000 psi. minimum. 1/4 through 3/4 in. diameter, over 6 in. in length: 60,000 psi. minimum. 7/8 through 1-1/2 in. diameter, all lengths: 60,000 psi. minimum. 18% minimum (all diameters) 35% minimum (all sizes) See ppendix- for plating information x F5 9 3-C ** EX CP SCREW--STINESS STEE, 18-8 & 316 x F5 9 3-G ** eat Treatment ardness Yield Strength* Tensile Strength Elongation in 4D* 18-8 and 316 stainless steel cap screws are both made from austenitic alloys as described below. 18-8: Used in products that require general atmospheric corrosion resistance, such as chemical and food-processing equipment. Some chemical environments may require special corrosion resistant materials and precautions. 316: The molybdenum content gives this type of stainless even greater corrosion resistance than 18-8 as well as superior strength at high temperatures. 18-8: cap screw made from one of the following austenitic alloys: 303, 303Se, 304, XM7, all of which are characterized as having a chromium content of 17-19% and nickel content of 8-10%. 316: cap screw made from 316 stainless steel, an austenitic alloy which differs from 18-8 by its molybdenum content (2-3%) and a higher nickel content (10-14%). The austenitic alloys develop their strength through work hardening during the fastener manufacturing process, as seen from the hardness properties below. The only heat treatment normally available on austenitic stainless alloys is annealing, which is done at approximately 1900 F to a dead soft condition and is not normally thermally reversible. 1/4 through 5/8 in. diameter: Rockwell B95 - C32 3/4 through 1 in. diameter: Rockwell B80 - C32 1/4 through 5/8 in. diameter, 2.25D and longer: 65,000 psi. minimum 3/4" (2.25D & longer) & 7/8 through 1 in. diameter (3D & longer): 45,000 psi. minimum 1/4 through 5/8 in. diameter, 2.25D and longer: 100,000-150,000 psi. 3/4" (2.25D & longer) & 7/8 through 1 in. diameter (3D & longer): 85,000-140,000 psi. 1/4 through 5/8 in. diameter: 20% minimum; 3/4 through 1 in. diameter: 25% minimum. D = Nominal diameter of the screw in inches *These properties are tested only on machined specimens when the testing machine cannot provide for full testing of the parts. **Product standards require the manufacturer s head marking to appear on the top of all cap screws 1/4 diameter and larger. X represents one location such a marking may appear.
Ribbed Neck Carriage Bolts Bolts & Cap Screws M D 90 o pprox B V Nominal or Basic Bolt R CRRIGE BOTS, RIBBED NECK B W M ead to Ribs Body ead ead eight For engths of 7/8 and Shorter 1 in. and onger Number of Ribs W NSI/SME B18.5 V D R Over Ribs 7/8 and Shorter Depth Over Ribs For engths of 1 in. and 1-1/8 1/4 and onger Fillet Radius Max Min Max Min Max Min + 0.031* pprox Min +0.031 Max No. 10 0.1900 0.199 0.182 0.469 0.438 0.114 0.094 0.031 0.063 9 0.210 0.250 0.407 0.594 0.031 1/4 0.2500 0.260 0.237 0.594 0.563 0.145 0.125 0.031 0.063 10 0.274 0.250 0.407 0.594 0.031 5/16 0.3125 0.324 0.298 0.719 0.688 0.176 0.156 0.031 0.063 12 0.340 0.250 0.407 0.594 0.031 3/8 0.3750 0.388 0.360 0.844 0.782 0.208 0.188 0.031 0.063 12 0.405 0.250 0.407 0.594 0.031 7/16 0.4375 0.452 0.421 0.969 0.907 0.239 0.219 0.031 0.063 14 0.470 0.250 0.407 0.594 0.031 1/2 0.5000 0.515 0.483 1.094 1.032 0.270 0.250 0.031 0.063 16 0.534 0.250 0.407 0.594 0.031 5/8 0.6250 0.642 0.605 1.344 1.219 0.344 0.313 0.094 0.094 19 0.660 0.313 0.438 0.625 0.062 3/4 0.7500 0.768 0.729 1.594 1.469 0.406 0.375 0.094 0.094 22 0.785 0.313 0.438 0.625 0.062 Tolerance on ength Nominal Screw Up to 1 in., incl. Over 1 in. to 2 1/2 in., incl. Nominal Screw ength Over 2 1/2 in. to 4 in., incl. ength of a carriage bolt is measured from the underhead bearing surface to the extreme end of the bolt. *Tolerance on #10 through 1/2 sizes for nominal lengths of 7/8 and shorter shall be +0.031 and -0.000. Over 4 in. to 6 in., incl. Over 6 in. No. 10 thru 3/8 +0.02-0.03 +0.02-0.04 +0.04-0.06 +0.06-0.10 +0.10-0.18 7/16 and 1/2 +0.02-0.03 +0.04-0.05 +0.06-0.08 +0.08-0.10 +0.12-0.18 9/16 thru 3/4 +0.02-0.03 +0.06-0.08 +0.08-0.10 +0.10-0.10 +0.14-0.18 7/8 and 1...... +0.08-0.10 +0.10-0.14 +0.12-0.16 +0.16-0.20 1-1/8 thru 1-1/2...... +0.12-0.12 +0.16-0.16 +0.18-0.18 +0.22-0.22 round head bolt with a ribbed or serrated shoulder made from low carbon steel. For use in soft, ductile metals, wood and plastics to keep the bolt from turning when nut is being tightened. Bolts shall be made from a carbon steel which conforms to the following chemical composition requirements-- Carbon: 0.55% maximum; Phosphorus: 0.048% maximum; Sulfur: 0.058% maximum ardness Rockwell B70-100 Tensile Strength Yield Strength Elongation Reduction of rea Plating 60,000 psi. minimum 36,000 psi. minimum 18% minimum 35% minimum See ppendix- for plating information.
Cap Screws & Bolts Carriage Bolts Short Neck N R S B o 15 Max W C CRRIGE BOTS, SORT NECK NSI/SME B18.5 Nominal or Basic Bolt B W S N C R Body ead ead eight Square Width Square Depth Corner Radius on Square Fillet Radius Max Min Max MIn Max Min Max Min Max Min Max Max 1/4 0.2500 0.260 0.213 0.594 0.563 0.145 0.125 0.260 0.245 0.124 0.093 0.031 0.031 5/16 0.3125 0.324 0.272 0.719 0.688 0.176 0.156 0.324 0.307 0.124 0.093 0.031 0.031 3/8 0.3750 0.388 0.329 0.844 0.782 0.208 0.188 0.388 0.368 0.156 0.125 0.047 0.031 7/16 0.4375 0.452 0.385 0.969 0.907 0.239 0.219 0.452 0.431 0.156 0.125 0.047 0.031 1/2 0.5000 0.515 0.444 1.094 1.032 0.270 0.250 0.515 0.492 0.156 0.125 0.047 0.031 5/8 0.6250 0.642 0.559 1.344 1.219 0.344 0.313 0.642 0.616 0.218 0.187 0.078 0.062 3/4 0.7500 0.768 0.678 1.594 1.469 0.406 0.375 0.768 0.741 0.218 0.187 0.078 0.062 Tolerance on ength Nominal Bolt Up to 1 in., incl. Over 1 in. to 2 1/2 in., incl. Nominal Screw ength Over 2 1/2 in. to 4 in., incl. Over 4 in. to 6 in., incl. Over 6 in. No. 10 thru 3/8 +0.02-0.03 +0.02-0.04 +0.04-0.06 +0.06-0.10 +0.10-0.18 7/16 and 1/2 +0.02-0.03 +0.04-0.05 +0.06-0.08 +0.08-0.10 +0.12-0.18 9/16 thru 3/4 +0.02-0.03 +0.06-0.08 +0.08-0.10 +0.10-0.10 +0.14-0.18 7/8 and 1...... +0.08-0.10 +0.10-0.14 +0.12-0.16 +0.16-0.20 1-1/8 thru 1-1/2...... +0.12-0.12 +0.16-0.16 +0.18-0.18 +0.22-0.22 ength of a carriage bolt is measured from the underhead bearing surface to the extreme end of the bolt. round head bolt with a short, square shoulder under the head, and a unified thread pitch. The bolt is made from low or medium carbon steel. Carriage bolts are designed to keep the bolt from turning when a nut is being tightened. The short neck variety is used in sheet metal where a standard sized neck would create an obstruction. ISI 1006-1050 or equivalent steel ardness Rockwell B70-100 Proof oad Tensile Strength Yield Strength Elongation Reduction of rea Minimum Thread ength Plating 33,000 psi. 60,000 psi. minimum 36,000 psi. minimum 18% minimum 35% minimum The minimum length of thread shall be equal to twice the basic bolt diameter plus 0.25 in. for bolts 6 in. or shorter, and twice the diameter plus 0.50 in. for bolts longer than 6 in.. See ppendix- for plating information.
Cap Screws & Bolts Carriage Bolts, Square Neck ow Carbon & ot-dip Galvanized P O E CRRIGE BOTS -SQURE NECK NSI/SME B18.5 E O P Basic Bolt Body ead ead eight Square Width Square Depth Max Min Max Min Max Min Max Min Max Min 10 0.1900 0.199 0.182 0.469 0.436 0.114 0.094 0.199 0.185 0.125 0.094 1/4 0.2500 0.260 0.237 0.594 0.563 0.145 0.125 0.260 0.245 0.156 0.125 5/16 0.3125 0.324 0.298 0.719 0.688 0.176 0.156 0.324 0.307 0.187 0.156 3/8 0.3750 0.388 0.360 0.844 0.782 0.208 0.188 0.388 0.368 0.219 0.188 7/16 0.4375 0.452 0.421 0.969 0.907 0.239 0.219 0.452 0.431 0.250 0.219 1/2 0.5000 0.515 0.483 1.094 1.032 0.270 0.250 0.515 0.492 0.281 0.250 5/8 0.6250 0.642 0.605 1.344 1.219 0.344 0.313 0.642 0.616 0.344 0.313 3/4 0.7500 0.768 0.729 1.594 1.469 0.406 0.375 0.768 0.741 0.406 0.375 Nominal Bolt Up to 1 in., incl. Over 1 in. to 2-1/2 in., incl. Nominal Bolt ength Over 2-1/2 in. to 4 in., incl. Over 4 in. to 6 in., incl. Over 6 in. Tolerance on ength No. 10 thru 3/8 7/16 and 1/2 +0.02-0.03 +0.02-0.03 +0.02-0.04 +0.04-0.05 +0.04-0.06 +0.06-0.08 +0.06-0.10 +0.08-0.10 +0.10-0.18 +0.12-0.18 9/16 thru 3/4 +0.02-0.03 +0.06-0.08 +0.08-0.10 +0.10-0.10 +0.14-0.18 ength of a carriage bolt is measured from the underhead bearing surface to the extreme end of the bolt. OW CRBON & OT-DIP GVNIZED CRRIGE BOT x ** Core ardness Proof oad Yield Strength* Tensile Strength Elongation* Reduction of rea* Minimum Thread ength Plating ow Carbon Steel Carriage: Round head bolt with a square neck under the head, and a unified thread pitch. Made from low or medium carbon steel. ot-dip Galvanized Steel Carriage: Carriage bolt made from low or medium carbon steel with a galvanic zinc finish applied. ow Carbon Steel Carriage: The square neck is designed to keep the bolt from turning as a nut is tightened. ot-dip Galvanized Steel Carriage: Same design advantages as a low carbon carriage bolt but with a thicker protective coating for outdoor use. Often used in outdoor furniture. ow Carbon Steel & ot-dip Galvanized Steel Carriage: ISI 1006-1050 or equivalent steel. ow Carbon Steel & ot-dip Galvanized Steel Carriage: Rockwell B70 - B100 ow Carbon Steel Carriage: 33,000 psi. ow Carbon Steel Carriage: 36,000 psi. minimum ow Carbon Steel Carriage: 60,000 psi. minimum ow Carbon Steel Carriage: 18% minimum ow Carbon Steel Carriage: 35% minimum (all sizes) The minimum length of thread shall be equal to twice the basic bolt diameter plus 0.25 in. for bolts 6 in. or shorter, and twice the diameter plus 0.50 in. for bolts longer than 6 in.. See ppendix- for information on the plating of steel carriage bolts. *These properties are tested only on machined specimens when the testing machine cannot provide for full testing of the parts. **Product standards require the manufacturer s head marking to appear on the top of all bolts 1/4 diameter and larger. X represents one location such a marking may appear.
Grade-5 & 18-8 Stainless Carriage Bolts, Square Neck Bolts & Cap Screws GRDE-5 CRRIGE BOT x ** eat Treatment Core ardness Surface ardness Proof oad Yield Strength* Tensile Strength Elongation* Reduction of rea* Minimum Thread ength Plating Carriage bolt made from medium carbon steel. Same design advantages as a low carbon carriage bolt but with significantly greater load carrying capacity. ISI 1030-1050 or equivalent steel. Bolts shall be heat-treated, oil or water-quenched, at the option of the manufacturer, and tempered at a minimum temperature of 800 F. 1/4 through 1 in. diameters: Rockwell C25 - C34 1/4 through 1 in. diameters: Rockwell 30N54 maximum 1/4 through 1 in. diameters: 85,000 psi. 1/4 through 1 in. diameters: 92,000 psi. minimum 1/4 through 1 in. diameters: 120,000 psi. minimum 14% minimum 35% minimum (all sizes) The minimum length of thread shall be equal to twice the basic bolt diameter plus 0.25 in. for bolts 6 in. or shorter, and twice the diameter plus 0.50 in. for bolts longer than 6 in.. See ppendix- for information on the plating of steel carriage bolts. CRRIGE BOT -- STINESS STEE, 18-8 x F5 9 3-C ** eat Treatment Round head bolt with a square neck under the head, and a unified thread pitch, made from austenitic alloy stainless steel. Same design advantages as a low carbon carriage bolt but for use in environments which require general atmospheric corrosion resistance. 18-8 stainless steel carriage bolts are made from one of the following austenitic alloys: 302 Q, 303, 303Se, 304, XM7, all of which are characterized as having a chromium content of 17-19% and nickel content of 8-10%. The austenitic alloys develop their strength through work hardening during the fastener manufacturing process, as seen from the hardness properties below. The only heat treatment normally available on austenitic stainless alloys is annealing, which is done at approximately 1900 F to a dead soft condition and is not normally thermally reversible. ardness 1/4 through 1/2 in. diameter: Rockwell B95 - C32. Yield Strength Tensile Strength Elongation in 4D Minimum Thread ength 1/4 through 1/2 in. diameter, 2.25D and longer: 65,000 psi. minimum 1/4 through 1/2 in. diameter, 2.25D and longer: 100,000-150,000 psi. minimum 1/4 through 1/2 in. diameter: 20% minimum The minimum length of thread shall be equal to twice the basic bolt diameter plus 0.25 in. for bolts 6 in. or shorter. *These properties are tested only on machined specimens when the testing machine cannot provide for full testing of the parts. **Product standards require the manufacturer s head marking to appear on the top of all bolts 1/4 diameter and larger. X represents one location such a marking may appear.
Cap Screws & Bolts 12-Point Flange Screws lloy Steel W T F ** R B x C 30 o B G Y T ength of a flange screw is measured from the underhead bearing surface to the extreme end of the screw. Nominal D 12-POINT FNGE SCREWS IFI 115 B D F C W T R T Y Body Diam. Flange Diam. Width cross Flats Width cross Corners ead eight Wrenching eight Gaging Ring Thickness Gaging Ring Diam. Thread ength Min Max Min Max Min Min Max Min Min Max Min Max Min Basic Max 1/4 0.2435 0.375 0.365 0.252 0.244 0.278 0.260 0.15 0.058 0.0525 0.0522 0.2783 0.2780 1.000 0.25 5/16 0.3053 0.469 0.457 0.315 0.306 0.348 0.312 0.18 0.074 0.0600 0.0597 0.3483 0.3480 1.125 0.28 3/8 0.3678 0.562 0.550 0.377 0.368 0.420 0.375 0.21 0.095 0.0711 0.0708 0.4203 0.4200 1.250 0.31 7/16 0.4294 0.656 0.642 0.438 0.429 0.489 0.438 0.26 0.109 0.0840 0.0837 0.4893 0.4890 1.375 0.36 1/2 0.4919 0.750 0.735 0.502 0.493 0.562 0.500 0.29 0.129 0.0948 0.0945 0.5623 0.5620 1.500 0.38 9/16 0.5538 0.844 0.828 0.564 0.555 0.633 0.563 0.33 0.145 0.1071 0.1068 0.6333 0.6330 1.625 0.42 5/8 0.6163 0.938 0.921 0.627 0.618 0.705 0.625 0.36 0.166 0.1179 0.1176 0.7053 0.7050 1.750 0.46 3/4 0.7406 1.125 1.107 0.752 0.743 0.847 0.750 0.44 0.200 0.1416 0.1413 0.8473 0.8470 2.000 0.50 7/8 0.8647 1.312 1.293 0.877 0.866 0.987 0.875 0.51 0.234 0.1656 0.1653 0.9873 0.9870 2.250 0.56 1 0.9886 1.500 1.479 1.003 0.991 1.130 1.000 0.60 0.268 0.1893 0.1890 1.1303 1.1300 2.500 0.62 1-1/8 1.1086 1.688 1.665 1.128 1.115 1.271 1.125 0.66 0.310 0.2109 0.2106 1.2713 1.2710 2.750 0.71 1-1/4 1.2336 1.875 1.852 1.253 1.240 1.414 1.250 0.73 0.350 0.2331 0.2328 1.4143 1.4140 3.000 0.71 1-3/8 1.3568 2.062 2.038 1.378 1.365 1.556 1.375 0.80 0.392 0.2544 0.2541 1.5563 1.5560 3.250 0.83 1-1/2 1.4818 2.250 2.224 1.503 1.489 1.697 1.500 0.87 0.433 0.2763 0.2760 1.6973 1.6970 3.500 0.83 Flange Thickness Transition Thread ength Tolerance on ength Nominal Screw engths Up to 1 in., incl. Over 1 to 2 in., incl. over 2 to 6 in., incl. over 6 in. -0.031-0.047-0.062-0.125 eat Treatment one-piece bolt with a 24-sided head and a flanged bearing surface, made of alloy steel. Popular in aircraft manufacturing and aftermarket because of its ease of installation with pneumatic wrenches. lloy Steel Grade-8 flange screws shall be heat treated, oil quenched and tempered at a minimum tempering temperature of 800 F. ardness Rockwell C37-43 Tensile Strength 170,000 psi. minimum Yield Strength 158,000 psi. minimum Proof oad 135,000 psi. Plating See ppendix- for plating information. **Product standards require the manufacturer s head marking to appear on the top of all bolts 1/4 diameter and larger. X represents one location such a marking may appear.
Cap Screws & Bolts ex Tap Bolts Grades 2, 5 & 8 F G Not all Tap Bolts have a washer face. UNDERSIDE OF ED ength of a tap bolt is measured from the underhead bearing surface to the extreme end of the bolt. FUY TREDED EX TP BOTS SME B18.2.1-1996 Nominal or Basic Product F G Width cross Flats Width cross Corners ead eight Basic Max. Min. Max. Min. Basic Max. Min. 1/4 7/16 0.438 0.428 0.505 0.488 5/32 0.163 0.150 5/16 1/2 0.500 0.489 0.577 0.557 13/64 0.211 0.195 3/8 9/16 0.562 0.551 0.650 0.628 15/64 0.243 0.226 7/16 5/8 0.625 0.612 0.722 0.698 9/32 0.291 0.272 1/2 3/4 0.750 0.736 0.866 0.840 5/16 0.323 0.302 5/8 15/16 0.938 0.922 1.083 1.051 25/64 0.403 0.378 3/4 1-1/8 1.125 1.100 1.299 1.254 15/32 0.483 0.455 Nominal Screw Up to 1 in., incl. Over 1 in. to 2-1/2 in., incl. Nominal Over 2-1/2 in. to 4 in., incl. Over 4 in. to 6 in., incl. Tolerance on ength 1/4 to 3/8-0.03-0.04-0.06-0.10 7/16 and 1/2-0.03-0.06-0.08-0.10 9/16 to 3/4-0.03-0.08-0.10-0.10
Grades 2, 5 & 8 ex Tap Bolts Bolts & Cap Screws Grade-2 Grade-5 Grade-8 eadmark eadmark eadmark x ** x ** x ** eat Treatment Core ardness Surface ardness Proof oad Yield Strength* Tensile Strength Elongation* Reduction of rea* Plating Grade-2 Tap Bolt: low carbon, hex head bolt with a machined point which is threaded to the head. Grade-5 Tap Bolt: tap bolt made from medium carbon steel. Grade-8 Tap Bolt: tap bolt made from medium carbon alloy steel and heat-treated. Grade-2 Tap Bolt: To be used in drilled and tapped holes which are threaded full length. Used instead of a stud and a nut. Grade-5 Tap Bolt: Used to mount motors to machinery; also popular in automotive and truck repair. Grade-8 Tap Bolt: Used in automotive and fleet industries where greater tensile strength is required than can be met by a grade-5. Grade-2 Tap Bolt: ISI 1006-1025 or equivalent steel. Grade-5 Tap Bolt: ISI 1030-1541 or equivalent medium carbon steel. Use of an alloy such as 4037 modified steel is also acceptable. Grade-8 Tap Bolt: Medium carbon alloy steel. Note: For diameters 1/4 through 7/16 inch, it is permissible to use ISI 1541 steel. Grade-5 Tap Bolt: Bolts shall be heat treated, oil or water quenched, at the option of the manufacturer, and tempered at a minimum tempering temperature of 800 F. Grade-8 Tap Bolt: Bolts shall be heat treated, oil quenched and tempered at a minimum tempering temperature of 800 F. Grade-2 Tap Bolt: Rockwell B80 - B100 Grade-5 Tap Bolt: Rockwell C25 - C34 Grade-8 Tap Bolt: Rockwell C33 - C39 Grade-5 Tap Bolt: Rockwell 30N54 maximum Grade-8 Tap Bolt: Rockwell 30N58.6 maximum Grade-2 Tap Bolt: 55,000 psi. Grade-5 Tap Bolt: 85,000 psi. Grade-8 Tap Bolt: 120,000 psi. Grade-2 Tap Bolt: 57,000 psi. minimum Grade-5 Tap Bolt: 92,000 psi. minimum Grade-8 Tap Bolt: 130,000 psi. minimum Grade-2 Tap Bolt: 74,000 psi. minimum Grade-5 Tap Bolt: 120,000 psi. minimum Grade-8 Tap Bolt: 150,000 psi. minimum Grade-2 Tap Bolt: 18% minimum Grade-5 Tap Bolt: 14% minimum Grade-8 Tap Bolt: 12% minimum Grades-2, 5 & 8 Tap Bolts: 35% minimum (all sizes) See ppendix- for plating information. *These properties are tested only on machined specimens when the testing machine cannot provide for full testing of the parts. **Product standards require the manufacturer s head marking to appear on the top of all bolts 1/4 diameter and larger. X represents one location such a marking may appear.
Cap Screws & Bolts ead and Thread Dimensions 325 & 490 Structural Bolts R R F E E G o 30 +0-15 Y Cut Thread T 30 o +0-15 Y T Rolled Thread ength of a structural bolt is measured from the underhead bearing surface to the extreme end of the bolt. Nominal or Basic Product SME 18.2.6-1996 E F G R T Y Body STRUCTUR BOTS, 325 & 490 Width cross Flats Width cross Corners ead eight Radius of Fillet Thread ength Max Min Basic Max Min Max Min Basic Max Min Max Min Ref Transition Thread ength Max, Ref 1/2 0.5000 0.515 0.482 7/8 0.875 0.850 1.010 0.969 5/16 0.323 0.302 0.031 0.009 1.00 0.19 5/8 0.6250 0.642 0.605 1-1/16 1.062 1.031 1.227 1.175 25/64 0.403 0.378 0.062 0.021 1.25 0.22 3/4 0.7500 0.768 0.729 1-1/4 1.250 1.212 1.443 1.383 15/32 0.483 0.455 0.062 0.021 1.38 0.25 7/8 0.8750 0.895 0.852 1-7/16 1.438 1.394 1.660 1.589 35/64 0.563 0.531 0.062 0.031 1.50 0.28 1 1.0000 1.022 0.976 1-5/8 1.625 1.575 1.876 1.796 39/64 0.627 0.591 0.093 0.062 1.75 0.31 1 1/8 1.1250 1.149 1.098 1-13/16 1.812 1.756 2.093 2.002 11/16 0.718 0.658 0.093 0.062 2.00 0.34 1 1/4 1.2500 1.277 1.223 2 2.000 1.938 2.309 2.209 25/32 0.813 0.749 0.093 0.062 2.00 0.38 1 3/8 1.3750 1.404 1.345 2-3/16 2.188 2.119 2.526 2.416 27/32 0.878 0.810 0.093 0.062 2.25 0.44 1 1/2 1.5000 1.531 1.470 2-3/8 2.375 2.300 2.742 2.622 15/16 0.974 0.902 0.093 0.062 2.25 0.44 Tolerance on ength Nominal Screw ength Nominal Screw Through 6 in. Over 6 in. 1/2-0.12-0.19 5/8-0.12-0.25 3/4 through 1-0.19-0.25 1 1/8 through 1 1/2-0.25-0.25 58
325 & 490 Structural Bolts Mechanical & Performance Data Bolts & Cap Screws 325 x ** STM 325 BOTS, Type 1 325 x ** eat Treatment ardness Proof oad Yield Strength Tensile Strength Plating heavy hex bolt made of medium carbon steel. The bearing surface shall be flat and washer faced, and the point is chamfered. Commonly used in structural steel joints in heavy construction. Type 1 bolts shall be made from a carbon steel which conforms to the following chemical composition requirements-- Carbon: 0.25-0.58%; Manganese: 0.57% minimum; Phosphorus: 0.048% maximum; Sulfur: 0.058% maximum Type 1 bolts shall be heat treated by quenching in a liquid medium from above the austenitizing temperature and then tempering by reheating to a temperature of at least 800 F. 1/2" through 1" diameter, inclusive: Rockwell C24-35 1-1/8" through 1-1/2" diameter, inclusive: Rockwell C19-31 1/2" through 1" diameter, inclusive: 85,000 psi. 1-1/8" through 1-1/2" diameter, inclusive: 74,000 psi. 1/2" through 1" diameter, inclusive: 92,000 psi. minimum 1-1/8" through 1-1/2" diameter, inclusive: 81,000 psi. minimum 1/2" through 1" diameter, inclusive: 120,000 psi. minimum 1-1/8" through 1-1/2" diameter, inclusive: 105,000 psi. minimum See ppendix- for plating information. 490 x ** ** STM 490 BOTS, Types 1 & 3 Type 1 Type 3 490 x eat Treatment heavy hex bolt made of alloy steel. The bearing surface shall be flat and washer-faced, and the point is chamfered. Used in structural steel joints in heavy construction when greater yield and tensile strengths than those of an 325 bolt are required. Type 3 bolt is approximately twice as resistant to corrosion as a Type 1 bolt. Type 1 bolts shall be made from an alloy steel which conforms to the following chemical composition requirements-- Carbon: 0.28-0.50% (for 1-1/2" diameter: 0.33-0.55%); Phosphorus: 0.045% maximum; Sulfur: 0.045% maximum. Type 3 bolts shall be made from a corrosion resistant steel which conforms to the following chemical composition requirements-- Carbon: 0.19-0.55%; Manganese: 0.37% minimum; Phosphorus: 0.045% maximum; Sulfur: 0.055% maximum; Copper: 0.63% maximum; Chromium: 0.42% minimum; Nickel: 0.17% minimum; Molybdenum: 0.14% minimum. Type 1 bolts shall be heat treated by quenching in oil from above the transformation temperature. Type 3 bolts shall be quenched in a suitable liquid from above the transformation temperature. Type 1 and Type 3 bolts shall be tempered by reheating to a temperature of at least 800 F. ardness Rockwell C33-38 Proof oad Yield Strength Tensile Strength Plating 120,000 psi. 130,000 psi. minimum 150,000-170,000 psi. See ppendix- for plating information. **Product standards require the manufacturer s head marking to appear on the top of all cap screws 1/4 diameter and larger. X represents one location such a marking may appear. 59
Cap Screws & Bolts Step Bolts O P E ength of a step bolt is measured from the underhead bearing surface to the extreme end of the bolt. STEP BOTS NSI/SME B18.5 E O P Nominal Body ead ead eight Square Width Square Depth Max. Min. Max. Min, Max. Min. Max. Min. Max. Min. 10 0.199 0.182 0.656 0.625 0.114 0.094 0.199 0.185 0.125 0.094 1/4 0.260 0.237 0.844 0.813 0.145 0.125 0.260 0.245 0.156 0.125 5/16 0.324 0.298 1.031 1.000 0.176 0.156 0.324 0.307 0.187 0.156 3/8 0.388 0.360 1.219 1.188 0.208 0.188 0.388 0.368 0.219 0.188 Nominal Bolt ength Tolerance on ength Nominal Bolt Up to 1 in., incl. Over 1 in. to 2-1/2 in., incl. Over 2-1/2 in. to 4 in., incl. No. 10 thru 3/8 +0.02, -0.03 +0.02, -0.04 +0.04, -0.06 ardness Proof oad Yield Strength Tensile Strength Elongation Reduction of rea Minimum Thread ength Plating Similar to a carriage bolt in bearing surface and square-neck design, but with a wider, lower-profile, round head. Preferred for use where wood is bolted down as decking--the larger diameter head of the step bolt will not pull through the soft wood. Smooth, low, rounded head permits unrestricted movement over the surface. ISI 1006-1050 or equivalent steel. No. 10 through 3/8 in. diameter, all lengths: Rockwell B70 - B100 No. 10 through 3/8 in. diameter, all lengths: 33,000 psi. No. 10 through 3/8 in. diameter, all lengths: 36,000 psi. minimum No. 10 through 3/8 in. diameter, all lengths: 54,000 psi. minimum 18% minimum (all sizes) 35% minimum (all sizes) The minimum length of thread shall be equal to twice the basic bolt diameter plus 0.25 in.. See ppendix- for plating information.
Square Bolts Bolts & Cap Screws R Cut Thread R Rolled Thread C B B o 25 pprox T o 25 pprox T W UNDERSIDE OF ED SQURE BOTS NSI/SME B18.2.1 B W C R T Nominal or Basic Product Body Width cross Flats Width cross Corners ead eight Radius of Fillet Thread ength for Bolt engths 6 in. & Shorter over 6 in. Max Min Max Min Max Min Max Min Max Min Basic Basic 1/4 0.2500 0.260 0.237 0.375 0.362 0.530 0.498 0.188 0.156 0.03 0.01 0.750 1.000 5/16 0.3125 0.324 0.298 0.500 0.484 0.707 0.665 0.220 0.186 0.03 0.01 0.875 1.125 3/8 0.3750 0.388 0.360 0.562 0.544 0.795 0.747 0.268 0.232 0.03 0.01 1.000 1.250 7/16 0.4375 0.452 0.421 0.625 0.603 0.884 0.828 0.316 0.278 0.03 0.01 1.125 1.375 1/2 0.5000 0.515 0.482 0.750 0.725 1.061 0.995 0.348 0.308 0.03 0.01 1.250 1.500 5/8 0.6250 0.642 0.605 0.938 0.906 1.326 1.244 0.444 0.400 0.06 0.02 1.500 1.750 3/4 0.7500 0.768 0.729 1.125 1.088 1.591 1.494 0.524 0.476 0.06 0.02 1.750 2.000 7/8 0.8750 0.895 0.852 1.312 1.269 1.856 1.742 0.620 0.568 0.06 0.02 2.000 2.250 1 1.0000 1.022 0.976 1.500 1.450 2.121 1.991 0.684 0.628 0.09 0.03 2.250 2.500 1 1/8 1.1250 1.149 1.098 1.688 1.631 2.386 2.239 0.780 0.720 0.09 0.03 2.500 2.750 1 1/4 1.2500 1.277 1.223 1.875 1.812 2.652 2.489 0.876 0.812 0.09 0.03 2.750 3.000 1 3/8 1.3750 1.404 1.345 2.062 1.994 2.917 2.738 0.940 0.872 0.09 0.03 3.000 3.250 1 1/2 1.5000 1.531 1.470 2.250 2.175 3.182 2.986 1.036 0.964 0.09 0.03 3.250 3.500 Tolerance on ength Nominal Screw Up to 1 in., incl. Over 1 in. to 2 1/2 in., incl. ength of a square bolt is measured from the underhead bearing surface to the extreme end of the bolt. ardness Tensile Strength Elongation in 2 in. Plating Nominal Screw ength Over 2 1/2 in. to 4 in., incl. Over 4 in. to 6 in., incl. onger than 6 in. 1/4 to 3/8 +0.02-0.03 +0.02-0.04 +0.04-0.06 +0.06-0.10 +0.10-0.18 7/16 and 1/2 +0.02-0.03 +0.04-0.06 +0.06-0.08 +0.08-0.10 +0.12-0.18 9/16 to 3/4 +0.02-0.03 +0.06-0.08 +0.08-0.10 +0.10-0.10 +0.14-0.18 7/8 and 1...... +0.08-0.10 +0.10-0.14 +0.12-0.16 +0.16-0.20 1 1/8 to 1 1/2...... +0.12-0.12 +0.16-0.16 +0.18-0.18 +0.22-0.22 low or medium carbon steel, externally threaded mechanical device 1/4" diameter or larger, with a trimmed square shaped external wrenching head. Offers greater bearing surface for wrenching than hex head bolts. Bolts shall be made from a carbon steel which conforms to the following chemical composition requirements-- Phosphorus: 0.06% maximum; Sulfur: 0.15% maximum Bolts of a length less than 3 times diameter: Rockwell B69-100 Bolts of a length 3 times diameter and longer: Rockwell B100 maximum 60,000 psi. minimum 18% minimum See ppendix- for plating information. 59
Cap Screws & Bolts Serrated ex Washer Flange Screws W F ength of a serrated flange screw is measured from the bottom of the serrations to the extreme end of the screw. ( & Thread Pitch) SERRTED EX WSER ED FNGE SCREWS W F Width cross Flats Thickness Flange Macean-Fogg* & ill Fastener Max Min Max Min Max Min 6-32.187.181.157.132.266.254 8-32.250.244.186.161.355.341 10-24.312.305.210.185.441.425 10-32.312.305.210.185.441.425 1/4-20.375.367.240.216.531.513 5/16-18.500.491.298.274.706.686 3/8-16.562.552.331.307.793.771 7/16-14.625.612.385.365.884.856 1/2-13.750.736.510.470 1.070 1.020 5/8-11.9375.922.620.580 1.330 1.280 Tolerance on ength (NSI/SME B18.2.1) Nominal Screw Up to 1/2 in., incl. Nominal Screw ength Over 1/2 in. to 1 in., incl. Over 1 in. to 2 in., incl. Over 2 in. to 4 in., incl. No. 6 thru 10-0.02-0.03...... 1/4 thru 3/8-0.03-0.03-0.06... 7/16 thru 1/2-0.03-0.03-0.06-0.09 9/16 thru 3/4... -0.03-0.08-0.10 n unslotted hex-washer machine screw, but with a thicker flange and serrations on the bearing surface side. eat Treatment Surface ardness Core ardness Proof oad Tensile Strength Plating Designed for use in applications where loosening forces are present, such as vibration. The serrations grip to the bearing surface so that significantly more torque is needed to loosen than to tighten the screw. Flange provides more strength than a standard machine screw. Eliminates need for a lockwasher or locknut. ISI C1022 steel. Serrated flange screws shall be heat treated, quenched and tempered at a minimum temperature of 650 F. No. 6 through 5/8 in. diameter, all lengths: Rockwell 30N57.5 maximum No. 6 through 5/8 in. diameter, all lengths: Rockwell C25 - C38 No. 6 through 5/8 in. diameter, all lengths: 85,000 psi. No. 6 through 5/8 in. diameter, all lengths: 120,000 psi. minimum See ppendix- for plating information. *Macean-Fogg is the original writer of these serrated flange screw specifications (#6 through 7/16 diameter).
Cap Screws & Bolts Plow Bolts Grades 5 & 8 S (max) S (min) (if F nears 0) 45 max min sharp BS min with flat S (min) F (if F > 0 and with = BS min with flat) 80 82 F Thread length D ength of a plow bolt is measured from the top of the head to the extreme end of the bolt. NO. 3 ED POW BOTS S B SME B18.9-1996 D E F S B Nominal of Full Body of ead Max Min Max Min Sharp bs. Min with Flat Feed Thickness Depth of Square and ead Width of Square Max Max Min Max Min (Basic) 5/16 0.312 0.299 0.605 0.578 0.563 0.025 0.269 0.243 0.325 0.313 3/8 0.375 0.360 0.708 0.671 0.656 0.031 0.312 0.281 0.387 0.375 7/16 0.438 0.421 0.826 0.781 0.766 0.036 0.364 0.328 0.450 0.438 1/2 0.500 0.483 0.945 0.890 0.875 0.042 0.417 0.375 0.515 0.500 5/8 0.657 0.606 1.147 1.094 1.063 0.050 0.506 0.456 0.640 0.625 3/4 0.782 0.729 1.303 1.250 1.219 0.050 0.541 0.491 0.765 0.750 7/8 0.938 0.853 1.512 1.469 1.406 0.063 0.626 0.563 0.906 0.875 1 1.062 0.976 1.700 1.656 1.594 0.063 0.690 0.627 1.031 1.000 Tolerance on ength Nominal Bolt ll engths 1/4 through 3/8 ±0.03 7/16 and 1/2 ±0.06 5/8 through 1 ±0.12 MINIMUM TRED ENGT OF POW BOTS (2D + 0.25) SME B18.9-1996 Recommended Nominal Bolt, D Bolt ength 5/16 3/8 7/16 1/2 5/8 3/4 7/8 1 1 T to T to - - - - - - 1-1/4 0.875 T to T to T to T to - - - 1-1/2 0.875 1.000 T to T to T to T to T to - 1-3/4 0.875 1.000 1.125 1.250 T to T to T to T to 2 0.875 1.000 1.125 1.250 T to T to T to T to 2-1/4 0.875 1.000 1.125 1.250 1.500 T to T to T to 2-1/2 0.875 1.000 1.125 1.250 1.500 1.750 T to T to 3 0.875 1.000 1.125 1.250 1.500 1.750 2.000 2.250 3-1/2 0.875 1.000 1.125 1.250 1.500 1.750 2.000 2.250 4 0.875 1.000 1.125 1.250 1.500 1.750 2.000 2.250
Grades 5 & 8 Plow Bolts Bolts & Cap Screws ** eat Treatment Core ardness Surface ardness Proof oad Yield Strength Tensile Strength Plating GRDE-5 POW BOT Bolt with a countersunk, flat head, square neck and unified thread pitch, made from medium-carbon steel. Used in road graders, scoop shovels and other heavy-duty equipment where a smooth surface is required at the spot of head protrusion. Grade-5 Plow Bolts shall be made from a medium carbon steel which conforms to the following chemical composition requirements: Carbon: 0.28% to 0.55%; Phosphorus: 0.048% maximum; Sulphur: 0.058% maximum. Grade-5 Plow Bolts shall be heat treated, oil or water quenched, and tempered at a minimum tempering temperature of 800 F. Rockwell C25 - C34 Rockwell 30N 54 maximum 85,000 psi. 92,000 psi. minimum 120,000 psi. minimum See ppendix- for plating information. x ** GRDE-8 POW BOT x eat Treatment Core ardness Surface ardness Proof oad Yield Strength Tensile Strength Plating plow bolt made from alloy steel. Greater tensile and proof load strength than a grade-5. Popular use is with bulldozer and snowplow blades. ISI 4037 and 4042 steel Grade-8 Plow Bolts shall be heat treated, oil quenched and tempered at a minimum tempering temperature of 800 F. Rockwell C33 - C39 Rockwell 30N58.6 maximum 120,000 psi. 130,000 psi. minimum 150,000 psi. minimum Bolts are supplied unplated. **Product standards require the manufacturer s head marking to appear on the top of all bolts 1/4 diameter and larger. X represents one location such a marking may appear.