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Technical Reference for
Cutting Tools
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Drill Size
Metric(mm)
Decimal Equivalent
– 0.10 .0039– 0.20 .0079– 0.25 .0098– 0.30 .011880 0.34 .013579 0.37 .0145
1/64 0.40 .015678 0.41 .016077 0.46 .0180– 0.50 .019776 0.51 .020075 0.53 .021074 0.57 .0225– 0.60 .023673 0.61 .024072 0.64 .025071 0.66 .0260– 0.70 .027670 0.71 .028069 0.74 .0292– 0.75 .029568 0.79 .0310
1/32 0.79 .0313– 0.80 .031567 0.81 .032066 0.84 .033065 0.89 .0350– 0.90 .035464 0.91 .036063 0.94 .037062 0.97 .038061 0.99 .0390– 1.00 .039460 1.02 .040059 1.04 .041058 1.07 .042057 1.09 .043056 1.18 .0465
3/64 1.19 .046955 1.32 .052054 1.40 .055053 1.51 .0595
1/16 1.59 .062552 1.61 .063551 1.70 .067050 1.78 .070049 1.85 .073048 1.93 .0760
5/64 1.98 .078147 1.99 .0785– 2.00 .078746 2.06 .0810
Drill Size
Metric(mm)
Decimal Equivalent
45 2.08 .082044 2.18 .086043 2.26 .089042 2.37 .0935
3/32 2.38 .093841 2.44 .096040 2.50 .98039 2.53 .099538 2.58 .101537 2.64 .104036 2.71 .1065
7/64 2.78 .109435 2.79 .110034 2.82 .111033 2.87 .113032 2.95 .1160– 3.00 .118131 3.05 .12001/8 3.18 .125030 3.26 .128529 3.45 .136028 3.57 .1405
9/64 3.57 .140627 3.66 .144026 3.73 .147025 3.80 .149524 3.86 .152023 3.91 .1540
5/32 3.97 .156222 3.99 .1570– 4.00 .157521 4.04 .159020 4.09 .161019 4.22 .166018 4.31 .1695
11/64 4.37 .171917 4.39 .173016 4.50 .177015 4.57 .180014 4.62 .182013 4.70 .1850
3/16 4.76 .187512 4.80 .189011 4.85 .191010 4.91 .19359 4.98 .1960– 5.00 .19688 5.05 .19907 5.11 .2010
13/64 5.16 .20316 5.18 .20405 5.22 .2055
Drill Size
Metric(mm)
Decimal Equivalent
4 5.31 .20903 5.41 .2130
7/32 5.56 .21882 5.61 .22101 5.79 .2280A 5.94 .2340
15/64 5.95 .2344– 6.00 .2362B 6.05 .2380C 6.15 .2420D 6.25 .2460
1/4 6.35 .2500E 6.35 .2500F 6.53 .2570G 6.63 .2610
17/64 6.75 .2656H 6.76 .2660I 6.91 .2720– 7.00 .2756J 7.04 .2770K 7.14 .2810
9/32 7.14 .2812L 7.37 .2900M 7.49 .2950
19/64 7.54 .2969N 7.67 .3020
5/16 7.94 .3125– 8.00 .3150O 8.03 .3160P 8.20 .3230
21/64 8.33 .3281Q 8.43 .3320R 8.61 .3390
11/32 8.73 .3438S 8.84 .3480– 9.00 .3543T 9.09 .3580
23/64 9.13 .3594U 9.35 .3680
3/8 9.53 .3750V 9.56 .3770W 9.80 .3860
25/64 9.92 .3906– 10.00 .3937X 10.08 .3970Y 10.26 .4040
13/32 10.32 .4062Z 10.49 .4130
27/64 10.72 .4219– 11.00 .4331
7/16 11.11 .437529/64 11.51 .4531
Drill Size
Metric(mm)
Decimal Equivalent
15/32 11.91 .4688– 12.00 .4724
31/64 12.30 .48441/2 12.70 .5000– 13.00 .5118
33/64 13.10 .515617/32 13.49 .531235/64 13.89 .5469
– 14.00 .55129/16 14.29 .5625
37/64 14.68 .5781– 15.00 .5906
19/32 15.08 .593839/64 15.48 .60945/8 15.88 .6250– 16.00 .6299
41/64 16.27 .640621/32 16.67 .6562
– 17.00 .669343/64 17.07 .671911/16 17.46 .687545/64 17.86 .7031
– 18.00 .708723/32 18.26 .718847/64 18.65 .7344
– 19.00 .74803/4 19.05 .7500
49/64 19.45 .765624/32 19.84 .7812
– 20.00 .787451/64 20.24 .796913/16 20.64 .8125
– 21.00 .826953/64 21.03 .828227/32 21.43 .843855/64 21.84 .8594
– 22.00 .86617/8 22.23 .8750
57/64 22.62 .8906– 23.00 .9055
29/32 23.02 .906259/64 23.42 .921915/16 23.81 .9375
– 24.00 .9449 61/64 24.21 .953131/32 24.61 .9688
– 25.00 .984263/64 25.00 .9844
1 25.40 1.0000
Drill Size Decimal Equivalent
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Drills Size Equivalents
2
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Tap Drill Chart
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Drills Technical Reference
3
Tap Size
Drill Size
Probable% thread
0 - 80 3/64 71 - 81
M1.6 x .35 1.25 mm 67 - 77
1 - 64 53 59 - 67
M2 x .4 1/16 72 - 79
1 - 72 53 67 - 75
2 - 56 51 62 - 69
2 - 64 50 70 - 79
M2.5 x .45 2.05 mm 69 - 77
3 - 48 5/64 70 - 77
3 - 56 46 69 - 78
4 - 40 44 65 - 71
4 - 48 42 61 - 68
M3 x .5 40 70 - 79
5 - 40 39 65 - 72
5 - 44 38 63 - 71
M3.5 x .6 33 72 - 81
6 - 32 36 71 - 78
6 - 40 33 69 - 77
M4 x .7 3.25 mm 74 - 82
8 - 32 29 62 - 69
8 - 36 29 70 - 78
10 - 24 25 69 - 75
10 - 32 21 68 - 76
M5 x .8 4.2 mm 69 - 77
12 - 24 17 66 - 72
12 - 28 15 70 - 78
M6 x 1 10 76 - 84
1/4 - 20 7 70 - 75
1/4 - 28 3 72 - 80
5/16 - 18 F 72 - 77
5/16 - 24 I 67 - 75
M8 1.25 6.7 mm 74 - 80
3/8 - 16 5/16 72 - 77
Tap Size
Drill Size
Probable% thread
3/8 - 24 Q 71 - 79
M10 x 1.5 8.4 mm 76 - 82
7/16 - 14 U 70 - 75
7/16 - 20 25/64 65 - 72
M12 x 1.75 13/32 69 - 74
1/2 - 13 27/64 73 - 78
1/2 - 20 29/64 65 - 72
M14 x 2 15/32 76 - 81
9/16 - 12 31/64 68 - 72
9/16 - 18 33/64 58 - 65
5/8 - 11 17/32 75 - 79
5/8 37/64 58 - 65
M16 x 2 35/64 76 - 81
3/4 - 10 21/32 68 - 72
3/4 - 16 11/16 71 - 77
M20 x 2.5 11/16 74 - 78
7/8 - 9 49/64 72 - 76
7/8 - 14 13/16 62 - 67
M24 x 3 53/64 72 - 76
1 - 8 7/8 73 - 77
1 - 12 59/64 67 - 72
1 - 14 15/16 61 - 67
1-1/8 - 7 63/64 72 - 76
1/18 - 12 1-3/64 66 - 72
M30 x 3.5 1-3/64 75
-1/4 - 7 1-7/64 76
1-1/4 - 12 1-11/64 72
1-3/8 - 6 1-7/32 72
1-3/8 - 12 1-19/64 72
M36 x 4 1-1/4 82
1-1/2 - 6 1-11/32 72
1-1/2 - 12 1-27/64 72
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Speeds and Feeds for Carbide Drills
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Solid Carbide Drills Technical Reference
4
Material Group Material TypleCutting Speed SFM Cutting Speed SFM Cutting Speed SFM
Carbide 5XD and 8XD Coolant Drills Carbide 5XD and 8XD Coolant Drills Carbide Jobber Drills
Steel
Structural Steel 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
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 /Stainless Steel
Stainless Steel, Sulphured Austenitic Steel, Martensitic 98 - 131 66 - 82 66 - 82
High Tensile Steel
Alloyed Heat Treatable Steel 197 - 262 131 - 164 131 - 164
Tool Steel 131 - 164 131 - 164 131 - 164
High Speed Steel 98 - 131
Spring Steel 98 - 131 66- 82 66- 82
Cast Materials
Cast Iron 328 - 426 230 - 263 230 - 263
Spheroidal Graphite and Malleable Ci 263 - 238 197 - 230 197 - 230
Chilled Ci 66 - 98 32 - 49 32 - 49
Aluminium andAluminium Alloys
Aluminium Alloys 574 - 656 492 - 590 492 - 590
Al Wrought Alloys 574 - 656 492 - 590 492 - 590
Al Cast Alloys < 10%si 525 - 590 328 - 427 328 - 427
Al Cast Alloys > 10%si 525- 590 328 - 427 328 - 427
Special AlloysSpecial Alloys 66 - 82 15 15
Ti and Ti Alloys 66 - 98 15-20 15-20
Non Ferrous Metals
Copper Low Alloys 246 - 295 60-70 60-70
Brass 524 - 590 130-150 130-150
Bronze 246 - 295 100-110 100-110
Magnesium Alloys Magnesium Alloys 574 - 656 120-150 120-150
MaterialFeed (inch/rev) Dia
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
Feed Rate IPR
Minimum recommended coolant pressure:
for 1/4" diameter = 400 PSI for 1/2" diameter = 200 PSI for 3/4" diameter = 150 PSI
Recommended starting points
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Speeds and Feeds Annular Cutters
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Annular Cutters Technical Reference
5
Material being Cut Hardness (Brinell) SFM
Steels:
Carbon Steel 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 = Surface Feet per Minute
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
Material being Cut Hardness (Brinell) SFM Feed Rate (In.)
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
Plain Carbon Steel
150-225 55-65 .002 - .003
230-325 40-50 .002 - .003
330-400 25-35 .001 - .002
Alloyed Steel
150-225 55-65 .002 - .003
230-325 30-40 .002 - .003
330-400 20-30 .002 - .003
Tool Steel150-250 40-50 .002 - .003
255-375 20-30 .002 - .003
Stainless – Free machining 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)/ reamer diameter in inchesInches per Min (IPM) = Feed per flute X # of flutes X RPM
diameter in inches stock removal in inches.25" 0.008.50" 0.012.75" 0.0151.0" 0.0181.25" 0.0191.5" 0.021.75" 0.0212.0" 0.0222.25" 0.0232.5" 0.0240
0.005
0.01
0.015
0.02
0.025
0.03
.25" .50" .75" 1.0" 1.25" 1.5" 1.75" 2.0" 2.25" 2.5"
Stock Removal Amount
Hole Diameter
Recommendated stock removal in inches for Reaming
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 end mill) can cut their own path• Standard reamer chamfer angle is 45 degrees. When starting the reamer if you run into difficulty, reduce the angle 30
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Recommended Feeds and Speeds for HSS Finish Reaming
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Reamers Technical Reference
6
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Recommended Speeds for Carbide Headed Burrs
Recommended starting points for Speeds and Feeds for Counterboring and Countersinking
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Carbide Burrs Technical Reference
Counterbores and Countersinks
Technical Reference
7
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
Material Speed (SFM)
Mild Steel 75-85
Alloy Steel 40-80
Cast Iron - Soft 120-140
Brass 150-300
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
Double cut burrs are not recommended for machining Aluminum, Zinc, or Plastic
Speed
Feed
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Speeds and Feeds for Solid Carbide End Mills – Variable Helix End Mills
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Solid Carbide End Mills Technical Reference
8
Material SFMChip Load Per Tooth
1/8” 1/4” 1/2” 1”Aluminum Alloys 1120 0.0010 0.0020 0.0040 0.0080Carbon Steel 300-600 0.0010 0.0015 0.0030 0.0060Cast Iron 350-550 0.0010 0.0015 0.0030 0.0060Copper Alloys 500-900 0.0010 0.0020 0.0030 0.0060Steel – Annealed 350-500 0.0010 0.0020 0.0030 0.0050Steel – Rc 18-24 150-500 0.0004 0.0008 0.0015 0.0045Steel – Rc 25-37 125-200 0.0003 0.0005 0.0010 0.0030Stainless Steel – Free Machining 250-400 0.0005 0.0010 0.0020 0.0030Stainless Steel – Other 150-300 0.0005 0.0010 0.0020 0.0030Inconel/Monel 60-100 0.0005 0.0010 0.0015 0.0030Titanium 175-300 0.0005 0.0008 0.0015 0.0030
Carbide Roughing End Mills
End Mills for Aluminum
MaterialSFM
ExampleChip Load Per Tooth
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-.0040Alloy Steel 150-400 80-280 40, 41, 42xx .0012-.0017 .0018-.0025 .0025-.0035Grey Cast Iron 250-500 140-300 – .0012-.0017 .0018-.0025 .0025-.0035Ductile Cast Iron 120-400 90-150 – .0012-.0017 .0018-.0025 .0025-.0035SS 300 Series 150-550 100-240 304, 316, 304L .0015-.0020 .0020-.0030 .0030-.0040SS 400 Series 150-400 100-280 420, 420F .0015-.0020 .0020-.0030 .0030-.0040Precipitation Steel 100-400 90-240 15-5PH,16-6PH .0015-.0020 .0018-.0030 .0025-.0040High Temp. Alloys 60-150 50-160 Inconel .0010-.0015 .0015-.0025 .0020-.0030
MaterialSFM
ExampleChip Load Per Tooth
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-.0080Alloy Steel 150-400 80-280 40, 41, 42xx .0031-.0044 .0038-.0053 .0050-.0070Grey Cast Iron 250-500 140-300 – .0031-.0044 .0038-.0053 .0050-.0070Ductile Cast Iron 120-400 90-150 – .0031-.0044 .0038-.0053 .0050-.0070SS 300 Series 150-550 100-240 304, 316, 304L .0035-.0050 .0040-.0060 .0055-.0080SS 400 Series 150-400 100-280 420, 420F .0035-.0050 .0040-.0060 .0055-.0080Precipitation Steel 100-400 90-240 15-5PH,16-6PH .0030-.0045 .0035-.0055 .0050-.0070High Temp. Alloys 60-150 50-160 Inconel .0025-.0040 .0030-.0045 .0040-.0060
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.
Material SFMChip Load Per Tooth
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 0.0100Brass/Bronze 300-600 800-1500 0.0015 0.0040 0.0050 0.0060 0.0070 0.0080 0.0100Copper Alloys 350-550 800-1200 0.0015 0.0040 0.0050 0.0060 0.0070 0.0080 0.0100Plastics 500-900 1200-1600 0.0030 0.0080 0.0100 0.0120 0.0140 0.0160 0.0180
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Milling Cutters and Saws Technical Reference
9
• Depth of cut = .050” to .250” • Use higher recommended speed and feed for smaller depth of cut
Standard Keyways for Milling Cutters & Saws
Material to be MachinedHardness
(BHN)SFM
rangeChip loads per tooth
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 high Carbon = 1070, 1075, 1090, 1551
85-125 100-130 .002-.006"
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"
Cutter Hole Diameter Nominal size square KEY
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"
Revolution per Minute (RPM)= (3.82 x SFM)/ Cutter DiameterInches per Revolution (IPR) feed rate = Chip load per tooth x # of teethInches per Minute (IPM) feed rate = IPR x RPM
Round Adjustable Dies
Round Adjustable Dies Technical Reference
Taps Technical Reference
• 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
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10
Regular Hand Tap Dimensions
Dia of Tap
Threads per Inch OverallLength, A
Length of Full Thread, B
Length of Square, C
Dia of Shank, D
Size of SquareNC NF N8 N10
1/4 20 28 – – 2-1/2 1 5/16 .255 .1915/16 18 24 – – 2-23/32 1-1/8 3/8 .318 .2383/8 16 24 – – 2-15/16 1-1/4 7/16 .381 .2867/16 14 20 – – 3-5/32 1-7/16 13/32 .323 .2421/2 13 20 – – 3-3/8 1-21/32 7/16 .367 .2759/16 12 18 – – 3-19/32 1-21/32 1/2 .429 .3225/8 11 18 – – 3-13/16 1-13/16 9/16 .480 .3603/4 10 16 – – 4-1/4 2 11/16 .590 .4427/8 9 14 – – 4-11/16 2-7/32 3/4 .697 .5231 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 .6721-1/8 7 12 8 10 5-7/16 2-9/16 7/8 .896 .6721-3/16 – 12 8 10 5-7/16 2-9/16 1 1.021 .7661-1/4 7 12 8 10 5-3/4 2-9/16 1 1.021 .7661-5/16 – 12 8 10 5-3/4 2-9/16 1-1/16 1.108 .8311-3/8 6 12 8 10 6-1/16 3 1-1/16 1.108 .8311-7/16 – 12 8 10 6-1/16 3 1-1/8 1.233 .9251-1/2 6 12 8 10 6-3/8 3 1-1/8 1.233 .9251-5/8 – – 8 10 6-11/16 3-3/16 1-1/8 1.305 .9791-3/4 5 5-1/2 8 10 7 3-3/16 1-1/4 1.430 1.0721-7/8 – – 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 1.2332-1/8 – – 8 – 8 3-9/16 1-3/8 1.769 1.3272-1/4 4 4-1/2 8 – 8-1/4 3-9/16 1-7/16 1.894 1.4202-3/8 – – 8 – 8-1/2 4 1-7/16 2.019 1.5142-1/2 4 – 8 – 8-3/4 4 1-1/2 2.100 1.5752-3/4 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 1.9073-1/4 4 – 8 – 10 4-9/16 1-3/4 2.793 2.0953-1/2 4 – 8 – 10-1/4 4-15/16 2 3.008 2.2563-3/4 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
Fractional Sizes – Regular Length – ANSI Table 302
• American Standard• Ground Thread• High Speed Steel
Diar of Tap
Threads per Inch N12
OverallLength, A
Length of Full Thread, B
Length of Square, C
Diaof Shank, D
Size of Square
1-5/8 12 5 2 1-1/8 1.305 .9791-3/4 12 5 2 1-1/4 1.430 1.0721-7/8 12 5 2 1-1/4 1.519 1.139
2 12 5 2 1-3/8 1.644 1.2332-1/8 12 5-1/4 2 1-3/8 1.769 1.3272-1/4 12 5-1/4 2 1-7/16 1.894 1.4202-3/8 12 5-1/4 2 1-7/16 2.019 1.5142-1/2 12 5-1/4 2 1-1/2 2.100 1.5752-5/8 12 5-1/2 2 1-1/2 2.100 1.5752-3/4 12 5-1/2 2 1-1/2 2.100 1.5752-7/8 12 5-1/2 2 1-1/2 2.100 1.575
3 12 5-1/2 2 1-1/2 2.100 1.5753-1/8 12 5-1/2 2 1-1/2 2.100 1.5753-1/4 12 5-1/2 2 1-1/2 2.100 1.5753-3/8 12 5-1/2 2 1-1/2 2.100 1.5753-1/2 12 5-3/4 2 1-1/2 2.100 1.5753-5/8 12 6 2 1-3/4 2.100 1.5753-3/4 12 6 2 1-3/4 2.100 1.5753-7/8 12 6 2 1-3/4 2.100 1.575
4 12 6 2 1-3/4 2.100 1.575
Fractional Sizes – Short Length
• American Standard• Ground Thread• High Speed Steel
Tap Sizes
Basic Major Dia
Threads per inch Number of Flutes
Overall Length
A
Length of Thread
B
Length of Square
C
Diameter of Shank
D
Size of SquareNC
UNCNF
UNF0 0.060 80 2 1-5/8 5/16 3/16 0.141 0.1101 0.073 64 72 2 1-11/16 3/8 3/16 0.141 0.1102 0.086 56 64 3 1-3/4 7/16 3/16 0.141 0.1103 0.099 48 56 3 1-13/16 1/2 3/16 0.141 0.1104 0.112 40 48 3 1-7/8 9/16 3/16 0.141 0.1105 0.125 40 44 3 1-15/16 5/8 3/16 0.141 0.1106 0.138 32 40 3 2 11/16 3/16 0.141 0.1108 0.164 32 36 4 2-1/8 3/4 1/4 0.168 0.13110 0.190 24 32 4 2-3/8 7/8 1/4 0.194 0.15212 0.216 24 28 4 2-3/8 15/16 9/32 0.220 0.165
Regular Hand Tap DimensionsMachine Screw Sizes – ANSI Table 304
• Ground Thread• Right Hand• High Speed Steel M2
Regular Hand Tap Dimensions
Taps Technical Reference
11
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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 Cutting Tool Solutions are trademarks of Toolmex.