1 TAP & DIE PRICE LIST INDEX ANPT Die Page 4 BA Die Page 4 BA Tap Page 17 BSF Tap Page 19 BSB Die Page 4 BSB Tap Page 17 BSCY Tap Page 17 BSF Die Page 3 BSP Die Page 4 BSP Tap Page 18 BSPT Die Page 4 BSPT Tap Page 18 BSW Die Page 3 BSW Tap Page 19 ME Die Page 4 ME Tap Page 17 Metric Die Page 5 Metric Tap Page 21 Metric Tap Over Size Page 27 NPS Tap Page 18 NPSF Tap Page 18 NPT Tap Page 18 NPTF Tap Page 18 PG Tap Page 18 Trapezoidal Tap Page 29 UNC Tap Page 28 UNC Die Page 7 UNS Die Page 3 UNEF Tap Page 29 UNF Die Page 8 UNF Tap Page 28 Rotagrip Ltd Lodge Road Hockley Birmingham B18 5PN UK Tel Fax
2 DIES & DIE NUTS DIES are usually round and are used for cutting external threads. They can be held in a Die Stock for hand operation or in a Die Holder for use by machine. Dies are usually split which enables adjustment for precision, and also to extend the life of the die as it wears. They can also be solid which makes them fixed. Taper thread dies (NPT, BSPT) are usually solid. The lead at the front (etched) face is normally 3 pitches, for standard threading, and 2 pitches at the back face for closer threading, or soft materials. DIE NUTS are hexagonal, for turning with a wrench or spanner, and are usually used for repairing damaged threads. Many of the practices employed in tapping also apply to threading with dies. If you do encounter problems the following may help:- TROUBLESHOOTING DIE BREAKS WORK PIECE DIAMETER TOO BIG SPEED TOO HIGH DIE MISALIGNED WORK PIECE NOT CHAMPHERED DIE OVER-ADJUSTED DIE WEARS QUICKLY WRONG RAKE ANGLE FOR MATERIAL SPEED TOO HIGH INCORRECT FEED RATE POOR FINISH (ONE FLANK) INCORRECT FEED RATE POOR FINISH (BOTH FLANKS) CLEARANCE HOLES BLOCKED BAR DIAMETER TOO BIG SPEED TOO LOW WORK PIECE NOT CHAMPHERED INCORRECT OR LACK OF LUBRICANT WRONG RAKE ANGLE FOR MATERIAL COLD WELDING WORK PIECE DIAMETER TOO BIG SPEED TOO LOW INCORRECT OR LACK OF LUBRICANT WRONG RAKE ANGLE FOR MATERIAL CLEARANCE HOLES BLOCKED THREAD UNDERSIZE DIE MISALIGNED SPEED TOO LOW INCORRECT OR LACK OF LUBRICANT THREAD OVERSIZE PULLING OFF TOO HARD DIE CHIPPING CLEARANCE HOLES BLOCKED WORK PIECE NOT CHAMPHERED BAR DIAMETER TOO BIG SPEED TOO HIGH
3 8 UNS DIENUTS THREAD STOCK DIENUT RH CODE MATERIAL DIENUT 1.1/8.8 D2400H HSS /4.8 D2405H CS /8.8 D2410H CS /2.8 D2415H CS /8.8 D2420H CS /4.8 D2425H CS "8 D2435H CS Forged steel Diestocks also available. HSS BSW DIES & DIENUTS THREAD STOCK DIE RH LH RH (BSW) CODE DIAMETER DIE DIE DIENUT 1/8.40 D /16" /16.24 D /16" /32.24 D /16" /4.20 D /16" /4.20 D3030 1" /16.18 D3040 1" /8.16 D3045 1" /16.14 D /16" /2.12 D /16" /16.12 D /16" /8.11 D /2" /4.10 D /2" /8.9 D3085 2" "8 D3095 2" /4.7 D3105 3" /8.6 D3110 3" /2.6 D3115 3" /4.5 D3125 4" HSS BSF DIES & DIENUTS THREAD STOCK DIE RH LH RH (BSF) CODE DIAMETER DIE DIE DIENUT 3/16.32 D /16" /4.26 D /16" /16.22 D3210 1" /8.20 D3215 1" /16.18 D /16" /2.16 D /16" /16.16 D /16" /8.14 D /2" /4.12 D3245 2" /8.11 D3255 2" "10 D3260 2" /8.9 D3265 3" /4.9 D3270 3" /8.8 D3275 3" All prices subject to the addition of carriage and V.A.T.
4 HSS BRITISH ASSOCIATION (BA) DIES & DIENUTS NUMBER STOCK DIE RH LH RH CODE DIAMETER DIE DIE DIENUT 10 D /16" D /16" D /16" D /16" D /16" D /16" D /16" D /16" D /16" D /16" D /16" HSS BRASS THREAD (BSB) DIES HSS MODEL ENG (ME) DIES THREAD STOCK DIE RH THREAD STOCK DIE RH (BSB) CODE DIAMETER DIE (ME) CODE DIAMETER DIE 5/16.26 D3400 1" /4.40 D /16" /8.26 D3405 1" /16.40 D3630 1" /16.26 D /16" /16.32 D3625 1" /2.26 D /16" /8.32 D3635 1" /8.26 D /2" /4.26 D3430 2" Please enquire for non listed items BSP(F) DIES & DIENUTS THREAD STOCK DIE RH RH (BSP) CODE DIAMETER DIE DIENUT 1/8.28 D5055 1" /4.19 D /16" /8.19 D /2" /2.14 D /2" /8.14 D5075 2" /4.14 D5080 2" "11 D5100 3" /4.11 D5105 3" /2.11 D5110 3" ANPT DIES & DIENUTS THREAD STOCK DIE RH RH (ANPT) CODE DIAMETER DIE DIENUT 1/8.27 D4005 1" /4.18 D /16" /8.18 D /2" /2.14 D4020 2" /4.14 D4025 2" "11.5 D4030 3" / D4035 3" / D4040 4" "11.5 D4045 4" BSPT DIES & DIENUTS THREAD STOCK DIE RH RH (BSPT) CODE DIAMETER DIE DIENUT 1/8.28 D5005 1" /4.19 D /16" /8.19 D /2" /2.14 D5020 2" /4.14 D5030 2" All prices subject to the addition of carriage & V.A.T.
5 HSS METRIC COARSE*, FINE** & SPECIAL DIES & DIENUTS THREAD STOCK DIE RH LH RH LH (MM) CODE DIAMETER DIE DIE DIENUT DIENUT 1.6x0.35* D /16" x0.4* D /16" x0.45* D /16" x0.5* D /16" x0.5* D1045 1" x0.35 D /16" x0.6* D /16" x0.5** D /16" x0.7* D /16" x0.7* D1070 1" x0.75 D /16" x0.5 D /16" x0.75* D /16" x0.5** D /16" x0.75 D /16" x0.8* D /16" x0.8* D1095 1" x0.5 D /16" x0.75** D /16" x1* D /16" x1* D1115 1" x0.5 D /16" x0.75 D /16" x1* D /16" x1* D1125 1" x0.5 D1126 1" x0.75** D1128 1" x1** D1130 1" x1.25* D1135 1" x1.25* D /16" x0.5 D1136 1" x0.75 D1137 1" x1** D1140 1" x1.25* D1145 1" x0.5 D1146 1" x0.75 D1150 1" x1** D1155 1" x1.25** D1160 1" x1.5* D1165 1" x1.5* D /16" x0.5 D /16" x0.75 D /16" x1 D /16" x1.25 D /16" x1.5 D /16" All prices subject to the addition of carriage and V.A.T.
6 HSS METRIC COARSE*, FINE** & SPECIAL DIES & DIENUTS THREAD STOCK DIE RH LH RH LH (MM) CODE DIAMETER DIE DIE DIENUT DIENUT 12x0.5 D /16" x0.75 D /16" x1** D /16" x1.25** D /16" x1.5** D /16" x1.75* D /16" x1.75* D /2" x1 D /16" x0.5 D /16" x1** D /16" x1.25** D /16" x1.5** D /16" x1.5** D /2" x2* D /16" x2* D /2" x1 D /16" x1.5 D /16" x2 D /16" x0.5 D /2" x1** D /2" x1.5** D /2" x2* D /2" x2* D1220 2" x1 D /2" x1** D /2" x1.5** D /2" x2** D /2" x2.5* D /2" x2.5* D1230 2" x1 D /2" x1** D /2" x1** D1235 2" x1.5** D /2" x1.5** D1240 2" x2** D /2" x2.5* D /2" x2.5* D1250 2" x1 D1251 2" x1.5** D1255 2" x2** D1256 2" x2.5* D1260 2" x1 D1265 2" x1.5** D1270 2" x2** D1275 2" x3* D1280 2" All prices subject to the addition of carriage and V.A.T.
7 HSS METRIC COARSE*, FINE** & SPECIAL DIES & DIENUTS THREAD STOCK DIE RH LH RH LH (MM) CODE DIAMETER DIE DIE DIENUT DIENUT 25x1 D1281 2" x1.5 D1282 2" x1 D1283 2" x1.5 D1284 2" x1.5 D1287 3" x2 D1288 3" x3 D1289 3" x1 D1290 3" x1.5 D1291 3" x1 D1293 3" x1.5 D1297 3" x2 D1300 3" x3.5 D1305 3" x1 D1306 3" x2 D1313 3" x3.5 D1315 3" x1.5 D1317 3" x3 D1319 3" x4 D1320 3" x4 D1325 3" All prices subject to the addition of carriage and V.A.T.
8 WE ALSO SUPPLY.. HSS UNC DIES & DIENUTS THREAD STOCK DIE RH LH RH (UNC) CODE DIAMETER DIE DIE DIENUT 2.56 D /16" D /16" D /16" D /16" D /16" D /16" D /16" D /16" /4.20 D /16" /4.20 D2050 1" /16.18 D2055 1" /8.16 D2060 1" /16.14 D /16" /2.13 D /16" /16.12 D /16" /8.11 D /2" /8.11 D2080 2" /4.10 D /2" /8.9 D2090 2" "8 D2095 2" /8.7 D2100 3" /4.7 D2105 3" /8.6 D2110 3" /2.6 D2115 3" HSS UNF DIES & DIENUTS THREAD STOCK DIE RH LH RH (UNF) CODE DIAMETER DIE DIE DIENUT 0.80 D /16" D /16" D /16" D /16" D /16" D /16" D /16" D /16" /4.28 D /16" /4.28 D2250 1" /16.24 D2255 1" /8.24 D2260 1" /16.20 D2265 1" /2.20 D /16" /16.18 D /16" /8.18 D /2" /4.16 D /2" /8.14 D2290 2" "12 D2295 2" /8.12 D2300 3" /4.12 D2305 3" /8.12 D2310 3" /2.12 D2315 3" All prices subject to the addition of carriage and V.A.T.
9 Types of Tap HAND TAPS These are straight flute general purpose tools which can be used for both machine or hand tapping. They are generally the most economical tool for use on production runs, but are best on materials that produce chips, or where the swarf breaks readily. Where deep holes are to be tapped, in materials which produce stringy swarf, other types of taps may be needed, especially for coarse threads. Hand taps can be supplied in sets of three; bottom, second and taper leads, or individually. BOTTOM TAPS have a chamfer (lead) of 1 2 threads, the angle of the lead being around 18 degrees per side. They are used to produce threads close to the bottom of blind holes. SECOND TAPS have a lead of 3-5 threads at 8 degrees per side. They are the most popular and can be used for through holes, or blind holes where the thread does not need to go right to the bottom. TAPER TAPS have a lead of 7-10 threads at 5 degrees per side. The taper lead distributes the cutting force over a large area, and the taper shape helps the thread to start. They can therefore be used to start a thread prior to use of second or bottom leads, or for through holes. IMPORTANT NOTE ON TERMINOLOGY! In the U.K. bottom taps are often referred to as plugs. In North America second taps are often referred to as plugs! This can easily lead to confusion. To avoid problems when ordering it is best to use the terms bottom, second and taper. Another variation is that second taps are sometimes referred to as intermediate, and taper taps can be called firsts. MACHINE TAPS Machine taps are so called because they are designed to be run at higher speeds, and need less cutting power than hand taps. SPIRAL POINT Also known as gun nose or bull nose or chipdriver. These taps are dimensionally the same as a hand tap, second lead, but have the cutting face ground back relative to the axis of the tap, for the lead portion. This gives the flute a better cutting action, requiring less power, and pushes the cut material forward, allowing free flow of coolant along the flutes to the cutting edge. The flutes are not ground as deeply as for hand taps, giving the tap greater strength. It can therefore be run at higher speeds. Spiral point taps are ideal for machine tapping of through holes, or blind holes where there is enough clearance beyond the threaded portion to accommodate the swarf. SPIRAL FLUTE These taps are used to produce a thread close to the bottom of a blind hole and therefore have a very short lead. The right hand spiral cut of the flutes acts to force the swarf away from the cutting teeth to the rear of the flutes and out of the hole. They are better on materials which form long continuous stringy swarf, rather than chips.
10 They are also better to tap a thread in a hole where there is a break in the material, e.g. another hole, as the spiral fluting helps the tap to pick up on the other side. Spiral flute taps can have slow or fast helix angles. Slow spirals are used for non ferrous materials, and fast spirals for most other materials. We supply fast spiral as standard. FLUTELESS Otherwise known as Roll, Forming or Polygon taps. Used for the chipless production of threads in ductile materials such as copper, aluminium or soft brass. As the name implies they do not have flutes but lobes, which contact the work piece to form the thread by extrusion. They are operated at high speeds and are better at maintaining size. As long as all of the correct operating criteria are met, i.e. speed, hole size and lubrication, they have a longer life and less breakages than with other types of machine taps. Because they produce no chips they are very suitable for blind hole tapping. Fluteless taps require different tapping drill sizes and higher operating speeds than conventional taps, see later. They also produce stronger threads. LONG SHANK TAPS MACHINE NUT (BS949) These taps were designed for tapping nuts on machines, and have a long thread, shank and square length. The shank diameter is reduced below the thread minor diameter to enable the tap to run through the work piece. This was originally to allow nuts to collect on the shank. For nut production, taper leads were used to distribute the cutting action, but these taps are now generally used as long reach, and are supplied also in bottom and second leads. DIN 376 and 374 These are European standard taps that are dimensionally different to the standard ISO 529 UK types. They are generally longer and have reduced shanks as do Nut Taps. Basically DIN 376 are for standard coarse threads, and DIN 374 for fine threads. A third type DIN 371 is available. These have bigger shanks, so are not really classed as long reach. All of these taps are available in the same types as ISO 529, see previous pages. DIN 376 STRAIGHT FLUTE DIN 376 SPIRAL POINT (nitrided) DIN 376 SPIRAL FLUTE PIPE TAPS We supply BSP, BSPT and ANP taps to BS 949.
11 OTHER TYPES There are many other types of tap available, such as interrupted thread, series, tandem etc, but these are normally for special applications. We would advise you on enquiry should you require anything other than the standard forms listed here. We do stock some taps other than normal standards, as you can see below:- TRAPEZOIDAL TAP SURFACE COATINGS While selecting the correct type of tap for a job, the material to be tapped should also be considered. This may determine the surface coating that should be applied to the tap in order to extend its life. Most taps are supplied with no surface treatment. They are referred to as Bright Finish. These taps are mainly for use on non-ferrous materials, or steels that do not cold weld. Bright finish taps are therefore suitable for all hand operations, where speeds are too low for cold welding to occur, and for most machine operations. STEAM TEMPERING & NITRIDING. Nitriding hardens the tap s surface skin and gives a grey/black appearance. It extends tap life when used on abrasive materials such as Copper, Aluminium alloys and Plastics, but it can make the tap brittle and more prone to breakage. Steam Tempering gives a blue/black finish. It causes minute imperfections on the surface of the tap. These cause the tapping lubricant to be retained more readily, reducing friction and the possibility of cold welding. This helps the tap to cope with both mild and stainless steels. Both above processes are normally only required for Spiral point and Spiral flute taps when the work piece material requires them. These taps are known as Steam tempered and nitrided and have a blue/black finish. Titanium nitrided taps. TITANIUM NITRIDE (Tin) This is a gold coloured coating only a few microns thick which is not metallic so reduces the chance of cold welding. It is applied by vapour deposition using special purpose machines. It imparts to the tool a surface hardness of around Rockwell. It also imparts a good abrasive resistance and subsequent decrease in friction between the tool and the work piece. This can allow tapping at higher speeds. Suitable for most stainless steels. The process can increase the price of a tap significantly. When the tap is reground the coating will be removed. This coating is more appropriate to Fluteless taps than steam tempering and nitriding. TITANIUM CARBIDE NITRIDING (TiCn) This coating is applied to the tool in the same way as Tin, and gives a silver/grey finish. It has the same qualities as Tin coating, but
12 more so. It is equally more expensive. Suitable for very abrasive and high tensile materials. These are the surface treatments that we can offer. We do not keep all taps with all treatments already applied on the shelf. Our price list is for bright finish, but we keep most common standard coarse thread spiral point and spiral flute taps in bright or steam tempered and nitrided, at the same price as bright. Please enquire. We would be happy to advise you the best tap and coating for your job. SPEEDS, FEEDS AND LUBRICANTS Tapping speeds are determined by many factors. The main ones are:- a) Thread pitch b) Material being tapped c) Hole depth d) Hole type, through or blind e) Depth of thread f) Lubricant quality and flow rate Tapping speeds can be calculated using:- Recommended SFM are given later. RPM = Feed speed (SFM) 0.26 x Tap OD Tapping speeds should be decreased if :- a) Lubricant is poor, or flow is restricted b) Bottom lead or Spiral flute taps are used c) Thread depth (%) increases. d) Thread pitch is coarse e) Cutting taper threads (50% normal speed) f) Cutting Acme or Trapezoidal threads (40% normal speed) Tapping speeds can be increased if:- a) Thread depth decreases b) Thread pitch is fine c) Coolant flow and quality is good d) Spiral point taps are used RECOMMENDED FEED SPEEDS AND LUBRICANTS Speeds given are for machine tapping using HSS taps, and are given in feet per minute MATERIAL FEED SPEED (SFM) LUBRICANT Aluminium Soluble oil Aluminium alloy Soluble, light base or lard oil Brass Light base oil Bronze Light base oil Copper Light base oil Gun metal Soluble, light base or lard oil Grey cast iron Dry or soluble oil Alloy cast iron Sulphur based oil Malleable iron Soluble or sulphur based oil Magnesium alloy Soluble oil or paraffin with lard oil Nimonic alloy Very high pressure cutting oil Plastics Dry, freeze spray, liquid soap
13 Mild steel Sulphur based oil Carbon steel to Sulphur based oil 4% Carbon steel to Sulphur based oil 7% Carbon steel 7% Sulphur based oil Steel alloys to 60T Sulphur based oil Steel alloys 60T Sulphur based oil Stainless steels Sulphur based oil Tool steels Sulphur based oil With so many variables affecting tapping speeds there may need to be some experimentation to find the ideal. A good rule is to start at the slowest speed and work up. TROUBLESHOOTING Many factors can affect the quality of a tapped thread. Some more common problems are listed along with probable causes. POOR THREAD FINISH Misalignment of tap and work piece Incorrect feed rate Chips/swarf not being cleared properly Tapping device or machine faulty Insufficient or incorrect lubricant Incorrectly ground or blunt tap Wrong tap selection EXCESSIVE TAP WEAR Wrong tap selection Blunt or incorrectly sharpened tap Insufficient or incorrect lubricant Tapping speed too high Hole work hardened TAPS BREAKING Incorrectly sharpened/blunt tap Tap hits bottom of hole Machine or tapping device faulty Wrong tap selection Incorrect or insufficient lubricant Tapping speed too high Hole work hardened Inefficient chip or swarf removal Incorrect tapping drill size OVERSIZE/BELL MOUTHED Misalignment Incorrect feed rate Incorrect tapping drill Tapping device or machine faulty Insufficient or incorrect lubricant Incorrectly ground or eccentric tap Wrong tap selection COLD WELDING Wrong material composition Blunt or incorrectly sharpened tap Insufficient or incorrect lubricant Tapping speed too high Material too soft TAP TEETH CHIPPING Incorrectly sharpened/blunt tap Tap hits bottom of hole Machine or tapping device faulty In order to minimise problems the following rules should be followed:- 1) Use a pitch controlled tapping attachment 2) Choose the correct lubricant 3) Use the correct type of tap for the job 4) Use the correct tapping drill size
14 5) Choose the correct speeds and feeds 6) Keep taps sharp. Regrind with a proper machine 7) Ensure accurate alignment 8) Check hardness of material, especially when changing batches 9) Ensure thread gauging is recently certified they do wear! TAP TERMINOLOGY CLASSES OF FIT AND TOLERANCES The various standards for taps give certain allowances or tolerances for manufacture. Taps are generally manufactured to take advantage of these tolerances, so that as they wear their life is extended. The closest tolerances are applied to Class 1 taps, and the most generous to Class 3. Standard, off the shelf taps are manufactured to Class 2, which applies to all taps listed in this catalogue. Classes 1 and 3 can be manufactured to order. Classes of fit apply to all thread forms:- CLASS 1 Produces tapped holes of 4H and 5H fit for Metric threads, 3B fit for American Unified threads and Close fit for Whitworth and BA threads. CLASS 2 Produces tapped holes of 6H, 4G and 5G for Metric threads, 2B for Unified threads and Medium fit for Whitworth and BA threads. CLASS 3 Produces tapped holes of 7H, 8H and 6G for Metric threads, 1B for Unified threads and Free fit for Whitworth and BA threads. Information on tolerances and fits for individual threads is available on request. TAPPING DRILL SIZES METRIC COARSE AND FINE THREADS THREAD SIZE DRILL (mm) THREAD SIZE DRILL (mm) THREAD SIZE DRILL (mm) M1x M9x M18x2 16 M1.2x M9x1 8 M18x M1.4x M9x M20x1 19 M1.6x M10x M20x M1.8x M10x M20x2 18 M2x M10x1 9 M20x M2.2x M10x M22x1 21 M2.5x M10x M22x M2.6x M11x1 10 M22x2 20 M3x M11x M22x M3x M11x M24x1 23 M3.5x M12x M24x M3.5x M12x M24x2 22 M4x M12x1 11 M24x3 21 M4x M12x M25x M4.5x0.5 4 M12x M25x2 23 M4.5x M12x M27x3 24
16 / / / / / / / / / / / / TAPPING DRILLS FOR FLUTELESS TAPS METRIC DRILL (mm) UNC DRILL (mm) UNF DRILL (mm) 1.6x x x x x x x x x x / / x / / x / / x / / x / / BA THREADS THREAD DRILL (mm) Calculating tapping drill sizes. As a rule of thumb, for Metric threads, the tapping drill can be calculated by subtracting the pitch from the diameter of the thread. Eg for an M5x0.75 thread the tapping drill is mm = 4.25mm. For Imperial (inch) threads the tapping drill size is calculated in the same way, diameter minus pitch. Eg for 3/4.10 UNC pitch = 0.1, diameter = 0.75, tapping drill = 0.65 = 16.5mm.
17 HSS BRITISH ASSOCIATION (BA) TAPS NUMBER STOCK STRAIGHT SET LEFT SPIRAL SPIRAL FLUTE- CODE FLUTE (THREE) HAND POINT FLUTE LESS 12 T T T T T T T T T T T T HSS BRITISH STANDARD BRASS (BSB) TAPS THREAD STOCK STRAIGHT (BSB) CODE FLUTE 5/16.26 T /8.26 T /16.26 T /2.26 T /16.26 T Sets available on request 5/8.26 T /4.26 T /8.26 T "26 T HSS BRITISH STANDARD CYCLE (BSCY) TAPS THREAD STOCK STRAIGHT (BSCY) CODE FLUTE 1/4.26 T /16.26 T /8.26 T /16.26 T /2.26 T /16.26 T We supply quality tap wrenches 5/8.26 T /4.26 T HSS MODEL ENGINEERS (ME) TAPS THREAD STOCK STRAIGHT (ME) CODE FLUTE 5/32.40 T /16.40 T /32.40 T /4.40 T /16.40 T /8.40 T /32.40 T /16.32 T Dies and dienuts also available 3/8.32 T /16.32 T All prices subject to the addition of carriage and V.A.T.
18 HSS BSP(F) TAPS Rp THREAD STOCK STRAIGHT SET LEFT SPIRAL SPIRAL STRAIGHT (BSP) CODE FLUTE (THREE) HAND POINT FLUTE FLUTE 1/8.28 T /4.19 T /8.19 T /2.14 T /8.14 T /4.14 T /8.14 T "11 T /4.11 T /2.11 T /4.11 T "11 T /4.11 T /2.11 T /4.11 T "11 T HSS BSPT TAPS HSS PG TAPS THREAD STOCK STRAIGHT THREAD STOCK STRAIGHT (BSPT) CODE FLUTE (PG) CODE FLUTE 1/8.28 T T /4.19 T T /8.19 T T /2.14 T T /4.14 T T "11 T T /4.11 T T /2.11 T T "11 T T T HSS NPT, NPTF, NPS, NPSF TAPS SIZE/ STOCK NPT NPTF NPTF NPS NPS NPSF NPSF PITCH CODE STRAIGHT STOCK STRAIGHT STOCK STRAIGHT STOCK STRAIGHT FLUTE CODE FLUTE CODE FLUTE CODE FLUTE 1/16.27 T /8.27 T T T T /4.18 T T T T /8.18 T T T T /2.14 T T T T /4.14 T T T T "11.5 T T T T / T T / T "11.5 T All prices subject to the addition of carriage and V.A.T.
19 HSS BSW TAPS THREAD STOCK STRAIGHT SET LEFT SPIRAL SPIRAL FLUTE- (BSW) CODE FLUTE (THREE) HAND POINT FLUTE LESS 1/16.60 T /32.48 T /8.40 T /32.32 T /16.24 T /32.24 T /4.20 T /16.18 T /8.16 T /16.14 T /2.12 T /16.12 T /8.11 T /16.11 T /4.10 T /16.10 T /8.9 T /16.9 T "8 T /8.7 T /4.7 T /8.6 T /2.6 T /8.5 T /4.5 T /8.4.5 T "4.5 T HSS BSF TAPS THREAD STOCK STRAIGHT SET LEFT SPIRAL SPIRAL FLUTE- (BSW) CODE FLUTE (THREE) HAND POINT FLUTE LESS 3/16.32 T /4.26 T /16.22 T /8.20 T /16.18 T /2.16 T /16.16 T /8.14 T /16.14 T /4.12 T /16.12 T /8.11 T "10 T /8.9 T /4.9 T /8.8 T /2.8 T /8.8 T /4.7 T "7 T /4.6 T /2.6 T All prices subject to the addition of carriage and V.A.T.
20 Listed below is our stocked range of Metric HSS taps. This includes many sizes that are often considered 'special'. We can also supply virtually any other tap, please enquire. We also stock SCREW GAUGES, DIES, DIENUTS, TAP WRENCHES & DIE STOCKS.
21 HSS METRIC TAPS ISO 529 STANDARD COARSE*, FINE**, & SPECIAL SIZE/ STOCK STRAIGHT SET LEFT SPIRAL SPIRAL FLUTE- PITCH CODE FLUTE (THREE) HAND POINT FLUTE LESS 1.4x0.3 T x0.35* T x0.35 T x0.4* T x0.45 T x0.45 T x0.35** T x0.5* T x0.6 T x0.6 T x0.5** T x0.7* T x0.75** T x0.5** T x0.75* T x0.5** T x0.75 T x0.8* T x0.5 T x0.75** T x1* T x1.25 T x0.5 T x0.75** T x1* T x1.25 T x1.5 T x0.5 T x0.75** T x1** T x1.25* T x1.5 T x0.5 T x0.75 T x1** T x1.25* T x1.5 T x0.5 T x0.75 T x1** T x1.25** T x1.5* T x0.5 T x0.75 T x1** T x1.25* T
22 All prices subject to the addition of carriage and V.A.T. HSS METRIC TAPS ISO 529 STANDARD COARSE*, FINE**, & SPECIAL SIZE/ STOCK STRAIGHT SET LEFT SPIRAL SPIRAL FLUTE- PITCH CODE FLUTE (THREE) HAND POINT FLUTE LESS 11x1.5 T x1.75 T x0.5 T x0.75 T x1** T x1.25** T x1.5** T x1.75* T x0.75 T x1 T x1.25 T x1.5 T x1.75 T x0.5 T x0.75 T x1** T x1.25** T x1.5** T x2* T x1 T x1.5 T x1.75 T x2 T x0.5 T x1** T x1.25 T x1.5** T x1.75 T x2* T x1 T x1.5 T x2 T x0.5 T x1** T x1.25 T x1.5** T x2** T x2.5* T x1 T x1.5 T x0.5 T x1** T x1.25 T All prices subject to the addition of carriage and V.A.T.
23 HSS METRIC TAPS ISO 529 STANDARD COARSE*, FINE**, & SPECIAL SIZE/ STOCK STRAIGHT SET LEFT SPIRAL SPIRAL PITCH CODE FLUTE (THREE) HAND POINT FLUTE 20x1.5** T x2** T x2.5* T x1 T x1.25 T x1.5 T x0.75 T x1 T x1.25 T x1.5** T x1.75 T x2** T x2.5* T x1 T x1.5 T x1 T x1.25 T x1.5** T x2** T x2.5 T x3* T x1 T x1.25 T x1.5** T x2 T x3 T x1 T x1.5 T x2 T x1 T x1.25 T x1.5** T x2** T x3 T x1 T x1.5 T x2 T x1 T x1.5 T x2 T x1 T x1.5** T x2** T x3** T
24 All prices subject to the addition of carriage and V.A.T. HSS METRIC TAPS ISO 529 STANDARD COARSE*, FINE**, & SPECIAL SIZE/ STOCK STRAIGHT SET LEFT SPIRAL SPIRAL PITCH CODE FLUTE (THREE) HAND POINT FLUTE 30x3.5* T x1 T x1.5 T x1 T x1.5** T x2 T x1 T x1.5 T x2** T x3** T x3.5* T x1 T x1.5 T x2 T x1 T x1.5 T x2 T x1 T x1.5 T x2 T x2.5 T x3 T x4* T x1 T x1.5 T x2 T x3 T x1 T x1.5 T x2 T x1 T x1.5 T x2 T x3 T x4 T x1 T x1.5 T x2 T x3 T x1 T x1.5 T x1 T x1.5 T x2 T
25 All prices subject to the addition of carriage and V.A.T. HSS METRIC TAPS ISO 529 STANDARD COARSE*, FINE**, & SPECIAL SIZE/ STOCK STRAIGHT SET LEFT SPIRAL SPIRAL PITCH CODE FLUTE (THREE) HAND POINT FLUTE 42x2.5 T x3 T x4.5* T x1 T x1.5 T x1 T x1.5 T x2 T x2.5 T x3 T x1 T x1.5 T x2 T x3 T x4.5 T x1 T x1 T x1.5 T x2 T x3 T x4 T x5* T x1 T x1.5 T x2 T x2 T x3 T x5* T x4 T x5.5 T x2 T x3 T x5.5* T x1.5 T x3 T x4 T x6 T x2 T x3 T x2 T All prices subject to the addition of carriage and V.A.T.
26 DIN 376 (REDUCED SHANK) SIZE/ STOCK STRAIGHT SPIRAL SPIRAL PITCH CODE FLUTE POINT FLUTE 3x0.5 T x0.7 T x0.8 T x1 T x1.25 T x1.5 T x1.75 T x2 T DIN 371 (REINFORCED SHANK) SIZE STOCK STRAIGHT SPIRAL SPIRAL PITCH CODE FLUTE POINT FLUTE 3x0.5 T x0.7 T x0.8 T x1 T x1.25 T x1.5 T MACHINE NUT TAPS Available in bottom, second and taper leads SIZE/ STOCK STRAIGHT PITCH CODE FLUTE 3x0.5 T10559M x0.7 T10859M x0.8 T11159M x1 T11409M x1.25 T11909M x1.5 T12509M x1.75 T13109M x2 T13659M x2 T14109M x2.5 T14509M x2.5 T14859M All prices subject to the addition of carriage & V.A.T.
27 HSS METRIC OVERSIZE TAPS SIZE/ PLUS STOCK STRAIGHT SPIRAL SPIRAL PITCH (INCHES) CODE FLUTE POINT FLUTE 3x T x T x T x T x T x T x T x T x T x T x T x T x T x T x T x T x T x T x T x T x T x T x T x T This list is of our stocked oversize metric taps for producing threads prior to plating. We can supply any other oversized or undersized tap in any thread form. Please call for a quotation. We can also supply gauging to suit. All prices subject to the addition of carriage and V.A.T.
28 HSS UNC TAPS THREAD STOCK STRAIGHT SET LEFT SPIRAL SPIRAL FLUTE- (UNC) CODE FLUTE (THREE) HAND POINT FLUTE LESS 1.64 T T T T T T T T T /4.20 T /16.18 T /8.16 T /16.14 T /2.13 T /16.12 T /8.11 T /4.10 T /8.9 T "8 T /8"7 T /4"7 T /8"6 T /2"6 T /4"5 T "4.5 T HSS UNF TAPS THREAD STOCK STRAIGHT SET LEFT SPIRAL SPIRAL FLUTE- (UNF) CODE FLUTE (THREE) HAND POINT FLUTE LESS 0.80 T T T T T T T T T T /4.28 T /16.24 T /8.24 T /16.20 T /2.20 T /16.18 T /8.18 T /4.16 T /8.14 T "12 T /8"12 T /4"12 T /8"12 T /2"12 T All prices subject to the addition of carriage and V.A.T.
29 HSS UNEF* & UNIFIED SPECIAL TAPS Prices are for straight flute. Spiral point and Spiral flute quoted on request DIAMETER STOCK PRICE DIAMETER STOCK PRICE TPI CODE EACH TPI CODE EACH 1/4.40 T "16 T /16.40 T /8.16 T /4.36 T /16.16 T VG T /2.16 T /4.32* T /8.16 T /16.32* T /4.16 T /8.32* T "16 T /2.32 T "14 T "32 T /16.12 T /16.28* T /16.12 T /2.28* T /16.12 T /16.27 T /16.12 T /2.27 T /8.12 T /4.24 T /16.12 T /16.24 T /4.12 T /2.24 T /8.12 T /16.24* T "12 T /8.24* T /16.11 T /16.24* T /16.10 T /8.20 T /8.8 T /16.20 T /4.8 T /8.20 T /8.8 T T /2.8 T /4.20* T /8.8 T /16.20* T /4.8 T /8.20* T /8.8 T /16.20* T "8 T "20* T /4.8 T /16.20 T /8.8 T /8.18* T /2.8 T /16.18* T /8.8 T /16.16 T /4.8 T /16.16 T "8 T /16.16 T /4.8 T /8.16 T /2.8 T HSS TRAPEZOIDAL TAPS THREAD STOCK RH RH LH LH (TR) CODE SHORT LONG SHORT LONG 8x1.5 T x2 T x3 T x3 T x4 T x4 T x4 T X4 T x5 T All prices subject to the addition of carriage and V.A.T.
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