Technical Reference for

www.toolmex.com Size Equivalents

Drill Size Decimal Equivalent

Drill Metric Decimal Drill Metric Decimal Drill Metric Decimal Drill Metric Decimal Size (mm) Equivalent Size (mm) Equivalent Size (mm) Equivalent Size (mm) Equivalent – 0.10 .0039 45 2.08 .0820 4 5.31 .2090 15/32 11.91 .4688 – 0.20 .0079 44 2.18 .0860 3 5.41 .2130 – 12.00 .4724 – 0.25 .0098 43 2.26 .0890 7/32 5.56 .2188 31/64 12.30 .4844 – 0.30 .0118 42 2.37 .0935 2 5.61 .2210 1/2 12.70 .5000 80 0.34 .0135 3/32 2.38 .0938 1 5.79 .2280 – 13.00 .5118 79 0.37 .0145 41 2.44 .0960 A 5.94 .2340 33/64 13.10 .5156 1/64 0.40 .0156 40 2.50 .980 15/64 5.95 .2344 17/32 13.49 .5312 78 0.41 .0160 39 2.53 .0995 – 6.00 .2362 35/64 13.89 .5469 77 0.46 .0180 38 2.58 .1015 B 6.05 .2380 – 14.00 .5512 – 0.50 .0197 37 2.64 .1040 C 6.15 .2420 9/16 14.29 .5625 76 0.51 .0200 36 2.71 .1065 D 6.25 .2460 37/64 14.68 .5781 75 0.53 .0210 7/64 2.78 .1094 1/4 6.35 .2500 – 15.00 .5906 74 0.57 .0225 35 2.79 .1100 E 6.35 .2500 19/32 15.08 .5938 – 0.60 .0236 34 2.82 .1110 F 6.53 .2570 39/64 15.48 .6094 73 0.61 .0240 33 2.87 .1130 G 6.63 .2610 5/8 15.88 .6250 72 0.64 .0250 32 2.95 .1160 17/64 6.75 .2656 – 16.00 .6299 71 0.66 .0260 – 3.00 .1181 H 6.76 .2660 41/64 16.27 .6406 – 0.70 .0276 31 3.05 .1200 I 6.91 .2720 21/32 16.67 .6562 70 0.71 .0280 1/8 3.18 .1250 – 7.00 .2756 – 17.00 .6693 69 0.74 .0292 30 3.26 .1285 J 7.04 .2770 43/64 17.07 .6719 – 0.75 .0295 29 3.45 .1360 K 7.14 .2810 11/16 17.46 .6875 68 0.79 .0310 28 3.57 .1405 9/32 7.14 .2812 45/64 17.86 .7031 1/32 0.79 .0313 9/64 3.57 .1406 L 7.37 .2900 – 18.00 .7087 – 0.80 .0315 27 3.66 .1440 M 7.49 .2950 23/32 18.26 .7188 67 0.81 .0320 26 3.73 .1470 19/64 7.54 .2969 47/64 18.65 .7344 66 0.84 .0330 25 3.80 .1495 N 7.67 .3020 – 19.00 .7480 65 0.89 .0350 24 3.86 .1520 5/16 7.94 .3125 3/4 19.05 .7500 – 0.90 .0354 23 3.91 .1540 – 8.00 .3150 49/64 19.45 .7656 64 0.91 .0360 5/32 3.97 .1562 O 8.03 .3160 24/32 19.84 .7812 63 0.94 .0370 22 3.99 .1570 P 8.20 .3230 – 20.00 .7874 62 0.97 .0380 – 4.00 .1575 21/64 8.33 .3281 51/64 20.24 .7969 61 0.99 .0390 21 4.04 .1590 Q 8.43 .3320 13/16 20.64 .8125 – 1.00 .0394 20 4.09 .1610 R 8.61 .3390 ­­– 21.00 .8269 60 1.02 .0400 19 4.22 .1660 11/32 8.73 .3438 53/64 21.03 .8282 59 1.04 .0410 18 4.31 .1695 S 8.84 .3480 27/32 21.43 .8438 58 1.07 .0420 11/64 4.37 .1719 – 9.00 .3543 55/64 21.84 .8594 57 1.09 .0430 17 4.39 .1730 T 9.09 .3580 – 22.00 .8661 56 1.18 .0465 16 4.50 .1770 23/64 9.13 .3594 7/8 22.23 .8750 3/64 1.19 .0469 15 4.57 .1800 U 9.35 .3680 57/64 22.62 .8906 55 1.32 .0520 14 4.62 .1820 3/8 9.53 .3750 – 23.00 .9055 54 1.40 .0550 13 4.70 .1850 V 9.56 .3770 29/32 23.02 .9062 53 1.51 .0595 3/16 4.76 .1875 W 9.80 .3860 59/64 23.42 .9219 1/16 1.59 .0625 12 4.80 .1890 25/64 9.92 .3906 15/16 23.81 .9375 52 1.61 .0635 11 4.85 .1910 – 10.00 .3937 – 24.00 .9449 51 1.70 .0670 10 4.91 .1935 X 10.08 .3970 ­61/64 24.21 .9531 50 1.78 .0700 9 4.98 .1960 Y 10.26 .4040 31/32 24.61 .9688 49 1.85 .0730 – 5.00 .1968 13/32 10.32 .4062 – 25.00 .9842 48 1.93 .0760 8 5.05 .1990 Z 10.49 .4130 63/64 25.00 .9844 5/64 1.98 .0781 7 5.11 .2010 27/64 10.72 .4219 1 25.40 1.0000 47 1.99 .0785 13/64 5.16 .2031 – 11.00 .4331 – 2.00 .0787 6 5.18 .2040 7/16 11.11 .4375 46 2.06 .0810 5 5.22 .2055 29/64 11.51 .4531

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Tap Drill Chart

Tap Drill Probable Tap Drill Probable Size Size % thread Size Size % thread 0 - 80 3/64 71 - 81 3/8 - 24 Q 71 - 79 M1.6 x .35 1.25 mm 67 - 77 M10 x 1.5 8.4 mm 76 - 82 1 - 64 53 59 - 67 7/16 - 14 U 70 - 75 M2 x .4 1/16 72 - 79 7/16 - 20 25/64 65 - 72 1 - 72 53 67 - 75 M12 x 1.75 13/32 69 - 74 2 - 56 51 62 - 69 1/2 - 13 27/64 73 - 78 2 - 64 50 70 - 79 1/2 - 20 29/64 65 - 72 M2.5 x .45 2.05 mm 69 - 77 M14 x 2 15/32 76 - 81 3 - 48 5/64 70 - 77 9/16 - 12 31/64 68 - 72 3 - 56 46 69 - 78 9/16 - 18 33/64 58 - 65 4 - 40 44 65 - 71 5/8 - 11 17/32 75 - 79 4 - 48 42 61 - 68 5/8 37/64 58 - 65 M3 x .5 40 70 - 79 M16 x 2 35/64 76 - 81 5 - 40 39 65 - 72 3/4 - 10 21/32 68 - 72 5 - 44 38 63 - 71 3/4 - 16 11/16 71 - 77 M3.5 x .6 33 72 - 81 M20 x 2.5 11/16 74 - 78 6 - 32 36 71 - 78 7/8 - 9 49/64 72 - 76 6 - 40 33 69 - 77 7/8 - 14 13/16 62 - 67 M4 x .7 3.25 mm 74 - 82 M24 x 3 53/64 72 - 76 8 - 32 29 62 - 69 1 - 8 7/8 73 - 77 8 - 36 29 70 - 78 1 - 12 59/64 67 - 72 10 - 24 25 69 - 75 1 - 14 15/16 61 - 67 10 - 32 21 68 - 76 1-1/8 - 7 63/64 72 - 76 M5 x .8 4.2 mm 69 - 77 1/18 - 12 1-3/64 66 - 72 12 - 24 17 66 - 72 M30 x 3.5 1-3/64 75 12 - 28 15 70 - 78 -1/4 - 7 1-7/64 76 M6 x 1 10 76 - 84 1-1/4 - 12 1-11/64 72 1/4 - 20 7 70 - 75 1-3/8 - 6 1-7/32 72 1/4 - 28 3 72 - 80 1-3/8 - 12 1-19/64 72 5/16 - 18 F 72 - 77 M36 x 4 1-1/4 82 5/16 - 24 I 67 - 75 1-1/2 - 6 1-11/32 72 M8 1.25 6.7 mm 74 - 80 1-1/2 - 12 1-27/64 72 3/8 - 16 5/16 72 - 77

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Speeds and Feeds for Carbide Drills

Cutting Speed SFM Cutting Speed SFM Cutting Speed SFM Material Group Material Typle Carbide 5XD and Carbide 5XD and 8XD Coolant Drills Carbide Jobber Drills 8XD Coolant Drills 263 - 328 197 - 230 197 - 230 Free Cutting Steel 328 - 393 197 - 230 197 - 230 Unalloyed Heat Treatable Steel 263 - 295 197 - 230 197 - 230 Steel Unalloyed Case Hard Steel 295 - 328 197 - 230 197 - 230 Alloyed Case Hardened Steel 164 - 246 164 - 197 164 - 197 Nitriding Steel 230 - 262 131 - 164 131 - 164 Acid Resistant / , Sulphured Austenitic 98 - 131 66 - 82 66 - 82 Stainless Steel Steel, Martensitic Alloyed Heat Treatable Steel 197 - 262 131 - 164 131 - 164 Steel 131 - 164 131 - 164 131 - 164 High Tensile Steel High Speed Steel 98 - 131 Spring Steel 98 - 131 66- 82 66- 82 Cast Iron 328 - 426 230 - 263 230 - 263 Cast Materials Spheroidal Graphite and Malleable Ci 263 - 238 197 - 230 197 - 230 Chilled Ci 66 - 98 32 - 49 32 - 49 Aluminium Alloys 574 - 656 492 - 590 492 - 590 Aluminium and Al Wrought Alloys 574 - 656 492 - 590 492 - 590 Aluminium Alloys Al Cast Alloys < 10%si 525 - 590 328 - 427 328 - 427 Al Cast Alloys > 10%si 525- 590 328 - 427 328 - 427 Special Alloys 66 - 82 15 15 Special Alloys Ti and Ti Alloys 66 - 98 15-20 15-20 Copper Low Alloys 246 - 295 60-70 60-70 Non Ferrous Metals Brass 524 - 590 130-150 130-150 Bronze 246 - 295 100-110 100-110 Magnesium Alloys Magnesium Alloys 574 - 656 120-150 120-150

Minimum recommended coolant pressure: for 1/4" diameter = 400 PSI for 1/2" diameter = 200 PSI for 3/4" diameter = 150 PSI

Feed Rate IPR

Feed (inch/rev) Dia Material 0.079 0.118 0.197 0.236 0.315 0.394 0.472 0.63 0.787 1 Steel 0.002 0.004 0.005 0.006 0.007 0.009 0.009 0.011 0.012 0.014 High Tensile Steels / Acid Resistant 0.002 0.002 0.003 0.004 0.005 0.006 0.006 0.008 0.010 0.012 Cast Material 0.003 0.004 0.006 0.007 0.008 0.009 0.009 0.011 0.012 0.014 Aluminium Alloys 0.004 0.005 0.007 0.009 0.010 0.012 0.012 0.014 0.016 0.017 Titanium Alloys 0.001 0.002 0.002 0.003 0.004 0.004 0.004 0.006 0.007 0.008 Non Ferrous 0.002 0.003 0.004 0.005 0.007 0.008 0.008 0.010 0.012 0.014 Magnesium Alloys 0.003 0.004 0.005 0.007 0.008 0.010 0.010 0.011 0.012 0.014 Recommended starting points

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Speeds and Feeds Annular Cutters

Hardness Material being Cut SFM (Brinell) Steels: 125-175 85-95 Soft Alloyed Steels 175-225 60-75 Medium Alloyed Steels 225-250 50-75 Hard Alloyed Steels 250-300 30-45 Tool Steels ( D2, H13) 200-250 35-55 Stainless - Ferritic (400 series) 125-175 80-110 Stainless - Austenitic (300 series) 125-175 50-75 Stainless - Austenitic (300 series) 200-275 40-60 Cast Iron: Soft 110-150 75-100 Medium 150-225 50-80 Aluminum Wrought 50-150 500-750 Cast 45-125 450-750 Cast Copper – 115-130

SFM =

RPM (Revolutions per Minute) = (SFM *3.82) / Cutter Diameter (inches)

Feed: • Typical Feed Rate per Tooth is .003" / .004" inches per tool

Inches per Minute = # of teeth(flutes) X Feed Rate per Tooth X RPM

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Recommended Feeds and Speeds for HSS Finish Reaming

Hardness Feed Rate (In.) Material being Cut SFM (Brinell) per Flute Aluminum – 130-150 .002 - .003 Brass & Bronze – 100-130 .002 - .003 Bronze – High Tensil – 40-60 .002 - .003 Cast Iron – Soft 120-175 65-90 .002 - .003 Cast Iron – Mediun Hard 200-275 50-70 .002 - .003 Cast Iron – Chilled 300-375 20-30 .002 - .003 Malleable Cast iron 110-160 45-70 .002 - .003 150-225 55-65 .002 - .003 Plain Carbon Steel 230-325 40-50 .002 - .003 330-400 25-35 .001 - .002 150-225 55-65 .002 - .003 Alloyed Steel 230-325 30-40 .002 - .003 330-400 20-30 .002 - .003 150-250 40-50 .002 - .003 Tool Steel 255-375 20-30 .002 - .003 Stainless – Free 135-185 40-50 .001 - .002 Stainless – 300 series 135-300 35-45 .001 - .002 Stainless – PH 300-375 20-30 .001 - .002

Calculations: RPM’s = (3.82 X SFM)/ diameter in inches Inches per Min (IPM) = Feed per flute X # of flutes X RPM

Recommendated stock removal in inches for Reaming

0.03 diameter in inches stock removal in inches .25" 0.008 0.025 .50" 0.012 0.02 .75" 0.015 1.0" 0.018 Stock Removal 0.015 1.25" 0.019 Amount 1.5" 0.02 0.01 1.75" 0.021 2.0" 0.022 0.005 2.25" 0.023 0 2.5" 0.024 .25" .50" .75" 1.0" 1.25" 1.5" 1.75" 2.0" 2.25" 2.5" Hole Diameter Tech Tips: • Chatter may result when speed is too high • Too low a feed may produce chatter and excessive reamer wear • Too high a feed may reduce hole size accuracy • When not enough material is being reamed, increase feed rate or decrease pre-reaming hole size • Reamer will follow the existing hole. Only end cutting reamers (like an ) can cut their own path • Standard reamer angle is 45 degrees. When starting the reamer if you run into difficulty, reduce the angle 30

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Recommended Speeds for Carbide Headed Burrs Double cut burrs are not recommended for machining Aluminum, Zinc, or Plastic

Burr Diameter RPM 3/16" 30,000 1/4" - 3/8" 25,000 7/16- 1/2" 20,000 5/8" - 3/4' 15,000 1" 12,000

Counterbores and Technical Reference

Recommended starting points for Speeds and Feeds for Counterboring and Countersinking Speed

Material Speed (SFM) Mild Steel 75-85 Alloy Steel 40-80 Cast Iron - Soft 120-140 Brass 150-300

Feed

Cutting Major Diameter Inch per Rev. 1/4 to 3/8 .003 - .005 7/16 to 5/8 .004 - .006 11/16 to 7/8 .005 - .007 15/16 to 1-3/16 .006 - .008 1-1/4 to 1-1/2 .007 - .009

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Speeds and Feeds for Solid Carbide End Mills – Variable Helix End Mills

Chip Load Per Tooth Material SFM 1/8” 1/4” 1/2” 1” Aluminum Alloys 1120 0.0010 0.0020 0.0040 0.0080 Carbon Steel 300-600 0.0010 0.0015 0.0030 0.0060 Cast Iron 350-550 0.0010 0.0015 0.0030 0.0060 Copper Alloys 500-900 0.0010 0.0020 0.0030 0.0060 Steel – Annealed 350-500 0.0010 0.0020 0.0030 0.0050 Steel – Rc 18-24 150-500 0.0004 0.0008 0.0015 0.0045 Steel – Rc 25-37 125-200 0.0003 0.0005 0.0010 0.0030 Stainless Steel – Free Machining 250-400 0.0005 0.0010 0.0020 0.0030 Stainless Steel – Other 150-300 0.0005 0.0010 0.0020 0.0030 Inconel/Monel 60-100 0.0005 0.0010 0.0015 0.0030 Titanium 175-300 0.0005 0.0008 0.0015 0.0030

Carbide Roughing End Mills

SFM Chip Load Per Tooth Material Example Under 32 HRc Over 32 HRc 1/4” 3/8” 1/2” Carbon Steel 200-450 100-250 10, 11, 13xx .0014-.0019 .0020-.0030 .0030-.0040 Alloy Steel 150-400 80-280 40, 41, 42xx .0012-.0017 .0018-.0025 .0025-.0035 Grey Cast Iron 250-500 140-300 – .0012-.0017 .0018-.0025 .0025-.0035 Ductile Cast Iron 120-400 90-150 – .0012-.0017 .0018-.0025 .0025-.0035 SS 300 Series 150-550 100-240 304, 316, 304L .0015-.0020 .0020-.0030 .0030-.0040 SS 400 Series 150-400 100-280 420, 420F .0015-.0020 .0020-.0030 .0030-.0040 Precipitation Steel 100-400 90-240 15-5PH,16-6PH .0015-.0020 .0018-.0030 .0025-.0040 High Temp. Alloys 60-150 50-160 Inconel .0010-.0015 .0015-.0025 .0020-.0030

SFM Chip Load Per Tooth Material Example Under 32 HRc Over 32 HRc 5/8” 3/4” 1” Carbon Steel 200-450 100-250 10, 11, 13xx .0038-.0044 .0038-.0053 .0060-.0080 Alloy Steel 150-400 80-280 40, 41, 42xx .0031-.0044 .0038-.0053 .0050-.0070 Grey Cast Iron 250-500 140-300 – .0031-.0044 .0038-.0053 .0050-.0070 Ductile Cast Iron 120-400 90-150 – .0031-.0044 .0038-.0053 .0050-.0070 SS 300 Series 150-550 100-240 304, 316, 304L .0035-.0050 .0040-.0060 .0055-.0080 SS 400 Series 150-400 100-280 420, 420F .0035-.0050 .0040-.0060 .0055-.0080 Precipitation Steel 100-400 90-240 15-5PH,16-6PH .0030-.0045 .0035-.0055 .0050-.0070 High Temp. Alloys 60-150 50-160 Inconel .0025-.0040 .0030-.0045 .0040-.0060

End Mills for Aluminum

Chip Load Per Tooth Material SFM 1/8” 1/4” 5/16” 3/8” 1/2” 5/8” 3/4” 1” Aluminum Alloys 1120 1600-2000 0.0015 0.0040 0.0050 0.0060 0.0070 0.0080 0.0100 Brass/Bronze 300-600 800-1500 0.0015 0.0040 0.0050 0.0060 0.0070 0.0080 0.0100 Copper Alloys 350-550 800-1200 0.0015 0.0040 0.0050 0.0060 0.0070 0.0080 0.0100 Plastics 500-900 1200-1600 0.0030 0.0080 0.0100 0.0120 0.0140 0.0160 0.0180

Note: All speeds and feeds are suggested starting points. They may be increased or decreased depending on machine condition, depth of cut, finished required, coolant, etc.

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Recommended Speeds and Feeds for Side Milling Cutters • Depth of cut = .050” to .250” • Use higher recommended speed and feed for smaller depth of cut

Hardness SFM Chip loads per tooth Material to be Machined (BHN) range Range Free Machining Carbon Steels 1212, 1108, 1213, 1116,1118,1211, 1140, 1151 100-150 120-180 .002-.006" Free Machining Carbon Steels - leaded 12L14 100-150 120-190 .002-.006" Carbon Steel - wrought low Carbon = 1009, 1011, 1012, 1016, 1018, 1022,1025, 1518 medium Carbon = 1030, 1035,1040,1045,1049,1053,1524 85-125 100-130 .002-.006" high Carbon = 1070, 1075, 1090, 1551 125-200 75-90 .002-.006" 200-250 50-70 .002-.005" Alloyed steel 4110 4120 4140, 4320, 5120, 8115 8620 175-225 50-65 .002-.004" Ductile Cast Iron class 25, 30, 35, 40, 45 & 50 190-225 80-100 .002-.006" Stainless Steel 175-225 50-65 .002-.004" 230-300 40-60 .002-.004" Aluminum Alloys 2024,5050, 5056, 6061 N/A 200-400 .002-.010"

Revolution per Minute (RPM)= (3.82 x SFM)/ Cutter Diameter Inches per Revolution (IPR) feed rate = Chip load per tooth x # of teeth Inches per Minute (IPM) feed rate = IPR x RPM

Standard Keyways for Milling Cutters & Saws

Cutter Hole Diameter Nominal size

1/2" 3/32" 5/8" 1/8" 3/4" 1/8" 7/8" 1/8" 1" 1/4" 1-1/4" 5/16" 1-1/2" 3/8" 1-3/4" 7/16" 2" 1/2" 2-1/2" 5/8" 3" 3/4" 3-1/2" 7/8" 4" 1" 4-1/2" 1-1/8" 5" 1-1/4"

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Round Adjustable Dies • Advancing the adjusting screw opens up the die resulting in slightly larger cutting size • Retracting the screw closes when holding screw is tightened, resulting in a slightly smaller cutting size

Taps Technical Reference

Regular Hand Tap Dimensions

Dia Threads per Inch Overall Length of Length of Dia of Size of Fractional Sizes – Regular Length – of Tap NC NF N8 N10 Length, A Full Thread, B Square, C Shank, D Square ANSI Table 302 1/4 20 28 – – 2-1/2 1 5/16 .255 .191 • American Standard 5/16 18 24 – – 2-23/32 1-1/8 3/8 .318 .238 3/8 16 24 – – 2-15/16 1-1/4 7/16 .381 .286 • Ground Thread 7/16 14 20 – – 3-5/32 1-7/16 13/32 .323 .242 • High Speed Steel 1/2 13 20 – – 3-3/8 1-21/32 7/16 .367 .275 9/16 12 18 – – 3-19/32 1-21/32 1/2 .429 .322 5/8 11 18 – – 3-13/16 1-13/16 9/16 .480 .360 3/4 10 16 – – 4-1/4 2 11/16 .590 .442 7/8 9 14 – – 4-11/16 2-7/32 3/4 .697 .523 1 8 12 – 10 5-1/8 2-1/2 13/16 .800 .600 1-1/16 – 12 8 10 5-1/8 2-1/2 7/8 .896 .672 1-1/8 7 12 8 10 5-7/16 2-9/16 7/8 .896 .672 1-3/16 – 12 8 10 5-7/16 2-9/16 1 1.021 .766 1-1/4 7 12 8 10 5-3/4 2-9/16 1 1.021 .766 1-5/16 – 12 8 10 5-3/4 2-9/16 1-1/16 1.108 .831 1-3/8 6 12 8 10 6-1/16 3 1-1/16 1.108 .831 1-7/16 – 12 8 10 6-1/16 3 1-1/8 1.233 .925 1-1/2 6 12 8 10 6-3/8 3 1-1/8 1.233 .925 1-5/8 – – 8 10 6-11/16 3-3/16 1-1/8 1.305 .979 1-3/4 5 5-1/2 8 10 7 3-3/16 1-1/4 1.430 1.072 1-7/8 – – 8 10 7-5/16 3-9/16 1-1/4 1.519 1.139 2 4 4-1/2 8 10 7-5/8 3-9/16 1-3/8 1.644 1.233 2-1/8 – – 8 – 8 3-9/16 1-3/8 1.769 1.327 2-1/4 4 4-1/2 8 – 8-1/4 3-9/16 1-7/16 1.894 1.420 2-3/8 – – 8 – 8-1/2 4 1-7/16 2.019 1.514 2-1/2 4 – 8 – 8-3/4 4 1-1/2 2.100 1.575 2-3/4 4 – 8 – 9-1/4 4 1-9/16 2.350 1.762 3 4 – 8 – 9-3/4 4-9/16 1-5/8 2.543 1.907 3-1/4 4 – 8 – 10 4-9/16 1-3/4 2.793 2.095 3-1/2 4 – 8 – 10-1/4 4-15/16 2 3.008 2.256 3-3/4 4 – 8 – 10-1/2 5-5/16 2-1/8 3.217 2.413 4 4 – 8 – 10-3/4 5-5/16 2-1/4 3.467 2.600

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Regular Hand Tap Dimensions Fractional Sizes – Short Length • American Standard • Ground Thread • High Speed Steel

Diar Threads per Inch Overall Length of Length Dia Size of Tap N12 Length, A Full Thread, B of Square, C of Shank, D of Square 1-5/8 12 5 2 1-1/8 1.305 .979 1-3/4 12 5 2 1-1/4 1.430 1.072 1-7/8 12 5 2 1-1/4 1.519 1.139 2 12 5 2 1-3/8 1.644 1.233 2-1/8 12 5-1/4 2 1-3/8 1.769 1.327 2-1/4 12 5-1/4 2 1-7/16 1.894 1.420 2-3/8 12 5-1/4 2 1-7/16 2.019 1.514 2-1/2 12 5-1/4 2 1-1/2 2.100 1.575 2-5/8 12 5-1/2 2 1-1/2 2.100 1.575 2-3/4 12 5-1/2 2 1-1/2 2.100 1.575 2-7/8 12 5-1/2 2 1-1/2 2.100 1.575 3 12 5-1/2 2 1-1/2 2.100 1.575 3-1/8 12 5-1/2 2 1-1/2 2.100 1.575 3-1/4 12 5-1/2 2 1-1/2 2.100 1.575 3-3/8 12 5-1/2 2 1-1/2 2.100 1.575 3-1/2 12 5-3/4 2 1-1/2 2.100 1.575 3-5/8 12 6 2 1-3/4 2.100 1.575 3-3/4 12 6 2 1-3/4 2.100 1.575 3-7/8 12 6 2 1-3/4 2.100 1.575 4 12 6 2 1-3/4 2.100 1.575

Regular Hand Tap Dimensions

Machine Screw Sizes – ANSI Table 304 • Ground Thread • Right Hand • High Speed Steel ­M2

Threads per inch Overall Length of Length of Diameter of Tap Basic Major Number Size Length Thread Square Shank Sizes Dia NC NF of Flutes of Square UNC UNF A B C D 0 0.060 80 2 1-5/8 5/16 3/16 0.141 0.110 1 0.073 64 72 2 1-11/16 3/8 3/16 0.141 0.110 2 0.086 56 64 3 1-3/4 7/16 3/16 0.141 0.110 3 0.099 48 56 3 1-13/16 1/2 3/16 0.141 0.110 4 0.112 40 48 3 1-7/8 9/16 3/16 0.141 0.110 5 0.125 40 44 3 1-15/16 5/8 3/16 0.141 0.110 6 0.138 32 40 3 2 11/16 3/16 0.141 0.110 8 0.164 32 36 4 2-1/8 3/4 1/4 0.168 0.131 10 0.190 24 32 4 2-3/8 7/8 1/4 0.194 0.152 12 0.216 24 28 4 2-3/8 15/16 9/32 0.220 0.165

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©2014 Toolmex Corporation, Inc. All rights reserved. All specifications on this sheet are subject to change without notice. Photos shown are a general representation of the various models and may include some optional equipment. Toolmex Industrial Solutions and TMX Solutions are trademarks of Toolmex.

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