Designed for drilling stainless steel, tool steels, titanium, nickel base alloys and other high strength ferrous metals.
Screw machine lengths and a heavy web provide extra
rigidity and strength.
Web-thinned drill point reduces power requirements,
lowers drilling temperatures and extends tool life.
Fine grain 6% cobalt C-2 grade.
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Imperial Sizes
| Part # | Size | Diameter | Flute Length |
Overall Length |
|
| Fraction | Wire | ||||
| 20501350 | - | 80 | .0135 | 3/16 | 3/4 |
| 20501450 | - | 79 | .0145 | 3/16 | 3/4 |
| 20501560 | 1/64 | - | .0156 | 3/16 | 3/4 |
| 20501600 | - | 78 | .0160 | 3/16 | 3/4 |
| 20501800 | - | 77 | .0180 | 3/16 | 3/4 |
| 20502000 | - | 76 | .0200 | 1/4 | 1 |
| 20502100 | - | 75 | .0210 | 1/4 | 1 |
| 20502250 | - | 74 | .0225 | 1/4 | 1 |
| 20502400 | - | 73 | .0240 | 1/4 | 1 |
| 20502500 | - | 72 | .0250 | 5/16 | 1-1/8 |
| 20502600 | - | 71 | .0260 | 5/16 | 1-1/8 |
| 20502800 | - | 70 | .0280 | 5/16 | 1-1/8 |
| 20502920 | - | 69 | .0292 | 5/16 | 1-1/8 |
| 20503100 | - | 68 | .0310 | 3/8 | 1-1/8 |
| 20503120 | 1/32 | - | .0312 | 3/8 | 1-1/8 |
| 20503200 | - | 67 | .0320 | 3/8 | 1-1/8 |
| 20503300 | - | 66 | .0330 | 3/8 | 1-1/8 |
| 20503500 | - | 65 | .0350 | 7/16 | 1-1/4 |
| 20503600 | - | 64 | .0360 | 7/16 | 1-1/4 |
| 20503700 | - | 63 | .0370 | 7/16 | 1-1/4 |
| 20503800 | - | 62 | .0380 | 7/16 | 1-1/4 |
| 20503900 | - | 61 | .0390 | 7/16 | 1-1/4 |
| 20504000 | - | 60 | .0400 | 1/2 | 1-1/2 |
| 20504100 | - | 59 | .0410 | 1/2 | 1-1/2 |
| 20504200 | - | 58 | .0420 | 1/2 | 1-1/2 |
| 20504300 | - | 57 | .0430 | 1/2 | 1-1/2 |
| 20504650 | - | 56 | .0465 | 1/2 | 1-1/2 |
| 20504690 | 3/64 | - | .0469 | 1/2 | 1-1/2 |
| 20505200 | - | 55 | .0520 | 5/8 | 1-5/8 |
| 20505500 | - | 54 | .0550 | 5/8 | 1-5/8 |
| 20505950 | - | 53 | .0595 | 5/8 | 1-5/8 |
| 20506250 | 1/16 | - | .0625 | 5/8 | 1-5/8 |
| 20506350 | - | 52 | .0635 | 11/16 | 1-11/16 |
| 20506700 | - | 51 | .0670 | 11/16 | 1-11/16 |
| 20507000 | - | 50 | .0700 | 11/16 | 1-11/16 |
| 20507300 | - | 49 | .0730 | 11/16 | 1-11/16 |
| 20507600 | - | 48 | .0760 | 11/16 | 1-11/16 |
| 20507810 | 5/64 | - | .0781 | 11/16 | 1-11/16 |
| 20507850 | - | 47 | .0785 | 3/4 | 1-3/4 |
| 20508100 | - | 46 | .0810 | 3/4 | 1-3/4 |
| 20508200 | - | 45 | .0820 | 3/4 | 1-3/4 |
| 20508600 | - | 44 | .0860 | 3/4 | 1-3/4 |
| 20508900 | - | 43 | .0890 | 3/4 | 1-3/4 |
| 20509350 | - | 42 | .0935 | 3/4 | 1-3/4 |
| 20509380 | 3/32 | - | .0938 | 3/4 | 1-3/4 |
| 20509600 | - | 41 | .0960 | 13/16 | 1-13/16 |
| 20509800 | - | 40 | .0980 | 13/16 | 1-13/16 |
| 20509950 | - | 39 | .0995 | 13/16 | 1-13/16 |
| 20510150 | - | 38 | .1015 | 13/16 | 1-13/16 |
| 20510400 | - | 37 | .1040 | 13/16 | 1-13/16 |
| 20510650 | - | 36 | .1065 | 13/16 | 1-13/16 |
| 20510940 | 7/64 | - | .1094 | 13/16 | 1-13/16 |
| 20511000 | - | 35 | .1100 | 7/8 | 1-7/8 |
| 20511100 | - | 34 | .1110 | 7/8 | 1-7/8 |
| 20511300 | - | 33 | .1130 | 7/8 | 1-7/8 |
| 20511600 | - | 32 | .1160 | 7/8 | 1-7/8 |
| 20512000 | - | 31 | .1200 | 7/8 | 1-7/8 |
| 20512500 | 1/8 | - | .1250 | 7/8 | 1-7/8 |
| 20512850 | - | 30 | .1285 | 15/16 | 1-15/16 |
| 20513600 | - | 29 | .1360 | 15/16 | 1-15/16 |
| 20514050 | - | 28 | .1405 | 15/16 | 1-15/16 |
| 20514060 | 9/64 | - | .1406 | 15/16 | 1-15/16 |
| 20514400 | - | 27 | .1440 | 1 | 2-1/16 |
| 20514700 | - | 26 | .1470 | 1 | 2-1/16 |
| 20514950 | - | 25 | .1495 | 1 | 2-1/16 |
| 20515200 | - | 24 | .1520 | 1 | 2-1/16 |
| 20515400 | - | 23 | .1540 | 1 | 2-1/16 |
| 20515620 | 5/32 | - | .1562 | 1 | 2-1/16 |
| 20515700 | - | 22 | .1570 | 1-1/16 | 2-1/8 |
| 20515900 | - | 21 | .1590 | 1-1/16 | 2-1/8 |
| 20516100 | - | 20 | .1610 | 1-1/16 | 2-1/8 |
| 20516600 | - | 19 | .1660 | 1-1/16 | 2-1/8 |
| 20516950 | - | 18 | .1695 | 1-1/16 | 2-1/8 |
| 20517190 | 11/64 | - | .1719 | 1-1/16 | 2-1/8 |
| 20517300 | - | 17 | .1730 | 1-1/8 | 2-3/16 |
| 20517700 | - | 16 | .1770 | 1-1/8 | 2-3/16 |
| 20518000 | - | 15 | .1800 | 1-1/8 | 2-3/16 |
| 20518200 | - | 14 | .1820 | 1-1/8 | 2-3/16 |
| 20518500 | - | 13 | .185 | 1-1/8 | 2-3/16 |
| 20518750 | 3/16 | - | .1875 | 1-1/8 | 2-3/16 |
| 20518900 | - | 12 | .1890 | 1-3/16 | 2-1/4 |
| 20519100 | - | 11 | .1910 | 1-3/16 | 2-1/4 |
| 20519350 | - | 10 | .1935 | 1-3/16 | 2-1/4 |
| 20519600 | - | 9 | .1960 | 1-3/16 | 2-1/4 |
| 20519900 | - | 8 | .1990 | 1-3/16 | 2-1/4 |
| 20520100 | - | 7 | .2010 | 1-3/16 | 2-1/4 |
| 20520310 | 13/34 | - | .2031 | 1-3/16 | 2-1/4 |
| 20520400 | - | 6 | .2040 | 1-1/4 | 2-3/8 |
| 20520550 | - | 5 | .2055 | 1-1/4 | 2-3/8 |
| 20520900 | - | 4 | .2090 | 1-1/4 | 2-3/8 |
| 20521300 | - | 3 | .2130 | 1-1/4 | 2-3/8 |
| 20521870 | 7/32 | - | .2187 | 1-1/4 | 2-3/8 |
| 20522100 | - | 2 | .2210 | 1-5/16 | 2-7/16 |
| 20522800 | - | 1 | .2280 | 1-5/16 | 2-7/16 |
| 20523400 | - | A | .2340 | 1-5/16 | 2-7/16 |
| 20523440 | 15/64 | - | .2344 | 1-5/16 | 2-7/16 |
| 20523800 | - | B | .2380 | 1-3/8 | 2-1/2 |
| 20524200 | - | C | .2420 | 1-3/8 | 2-1/2 |
| 20524600 | - | D | .2460 | 1-3/8 | 2-1/2 |
| 20525000 | 1/4 | E | .2500 | 1-3/8 | 2-1/2 |
| 20525700 | - | F | .2570 | 1-7/16 | 2-5/8 |
| 20526100 | - | G | .2610 | 1-7/16 | 2-5/8 |
| 20526560 | 17/64 | - | .2656 | 1-7/16 | 2-5/8 |
| 20526600 | - | H | .2660 | 1-1/2 | 2-11/16 |
| 20527200 | - | I | .2720 | 1-1/2 | 2-11/16 |
| 20527700 | - | J | .2770 | 1-1/2 | 2-11/16 |
| 20528100 | - | K | .2810 | 1-1/2 | 2-11/16 |
| 20528120 | 9/32 | - | .2812 | 1-1/2 | 2-11/16 |
| 20529000 | - | L | .2900 | 1-9/16 | 2-3/4 |
| 20529500 | - | M | .2950 | 1-9/16 | 2-3/4 |
| 20529690 | 19/64 | - | .2969 | 1-9/16 | 2-3/4 |
| 20530200 | - | N | .3020 | 1-5/8 | 2-13/16 |
| 20531250 | 5/16 | - | .3125 | 1-5/8 | 2-13/16 |
| 20531600 | - | O | .3160 | 1-11/16 | 2-15/16 |
| 20532300 | - | P | .3230 | 1-11/16 | 2-15/16 |
| 20532810 | 21/64 | - | .3281 | 1-11/16 | 2-15/16 |
| 20533200 | - | Q | .3320 | 1-11/16 | 2-15/16 |
| 20533900 | - | R | .3390 | 1-11/16 | 2-15/16 |
| 20534380 | 11/32 | - | .3438 | 1-11/16 | 2-15/16 |
| 20534800 | - | S | .3480 | 1-3/4 | 3-1/16 |
| 20535800 | - | T | .3580 | 1-3/4 | 3-1/16 |
| 20535940 | 23/64 | - | .3594 | 1-3/4 | 3-1/16 |
| 20536800 | - | U | .3680 | 1-13/16 | 3-1/8 |
| 20537500 | 3/8 | - | .3750 | 1-13/16 | 3-1/8 |
| 20537700 | - | V | .3770 | 1-7/8 | 3-1/4 |
| 20538600 | - | W | .3860 | 1-7/8 | 3-1/4 |
| 20539060 | 25/64 | - | .3906 | 1-7/8 | 3-1/4 |
| 20539700 | - | X | .3970 | 1-15/16 | 3-5/16 |
| 20540400 | - | Y | .4040 | 1-15/16 | 3-5/16 |
| 20540620 | 13/32 | - | .4062 | 1-15/16 | 3-5/16 |
| 20541300 | - | Z | .4130 | 2 | 3-3/8 |
| 20542190 | 27/64 | - | .4219 | 2 | 3-3/8 |
| 20543750 | 7/16 | - | .4375 | 2-1/16 | 3-7/16 |
| 20545310 | 29/64 | - | .4531 | 2-1/8 | 3-5/8 |
| 20546880 | 15/32 | - | .4688 | 2-1/8 | 3-5/8 |
| 20548440 | 31/64 | - | .4844 | 2-3/16 | 3-11/16 |
| 20550000 | 1/2 | - | .5000 | 2-1/4 | 3-3/4 |
| 20551560 | 33/64 | - | .5156 | 2-3/8 | 3-7/8 |
| 20553120 | 17/32 | - | .5312 | 2-3/8 | 3-7/8 |
| 20554690 | 35/64 | - | .5469 | 2-1/2 | 4 |
| 20556250 | 9/16 | - | .5625 | 2-1/2 | 4 |
| 20557810 | 37/64 | - | .5781 | 2-5/8 | 4-1/8 |
| 20559380 | 19/32 | - | .5938 | 2-5/8 | 4-1/8 |
| 20560940 | 39/64 | - | .6094 | 2-3/4 | 4-1/4 |
| 20562500 | 5/8 | - | .6250 | 2-3/4 | 4-1/4 |
| 20564060 | 41/64 | - | .6406 | 2-7/8 | 4-1/2 |
| 20565620 | 21/32 | - | .6562 | 2-7/8 | 4-1/2 |
| 20567190 | 43/64 | - | .6719 | 2-7/8 | 4-5/8 |
| 20568750 | 11/16 | - | .6875 | 2-7/8 | 4-5/8 |
| 20570310 | 45/64 | - | .7031 | 3 | 4-3/4 |
| 20571880 | 23/32 | - | .7188 | 3 | 4-3/4 |
| 20573440 | 47/64 | - | .7344 | 3-1/8 | 5 |
| 20575000 | 3/4 | - | .7500 | 3-1/8 | 5 |
| 20576560 | 49/64 | - | .7656 | 3-1/4 | 5-1/4 |
| 20578120 | 25/32 | - | .7812 | 3-1/4 | 5-1/4 |
Metric Sizes
| Part # | Diameter | Flute Length |
Overall Length |
|
| MM | Inches | |||
| 20501180 | .3 | .0118 | 5 | 19 |
| 20501380 | .35 | .0138 | 5 | 19 |
| 20501570 | .4 | .0157 | 5 | 19 |
| 20501770 | .45 | .0177 | 5 | 19 |
| 20501970 | .5 | .0197 | 6.5 | 25 |
| 20502170 | .55 | .0217 | 6.5 | 25 |
| 20502360 | .6 | .0236 | 6.5 | 25 |
| 20502560 | .65 | .0256 | 8 | 29 |
| 20502760 | .7 | .0276 | 8 | 29 |
| 20502950 | .75 | .0295 | 8 | 29 |
| 20503150 | .8 | .0315 | 9.5 | 29 |
| 20503350 | .85 | .0335 | 9.5 | 29 |
| 20503540 | .9 | .0354 | 11 | 32 |
| 20503740 | .95 | .0374 | 11 | 32 |
| 20503940 | 1 | .0394 | 12.5 | 38 |
| 20504130 | 1.05 | .0413 | 12.5 | 38 |
| 20504330 | 1.1 | .0433 | 12.5 | 38 |
| 20504520 | 1.15 | .0452 | 12.5 | 38 |
| 20504720 | 1.2 | .0472 | 12.5 | 38 |
| 20504920 | 1.25 | .0492 | 16 | 41 |
| 20505110 | 1.3 | .0511 | 16 | 41 |
| 20505310 | 1.35 | .0531 | 16 | 41 |
| 20505510 | 1.4 | .0551 | 16 | 41 |
| 20505710 | 1.45 | .0571 | 16 | 41 |
| 20505900 | 1.5 | .0590 | 16 | 41 |
| 20506300 | 1.6 | .0630 | 16 | 41 |
| 20506690 | 1.7 | .0669 | 17.5 | 43 |
| 20507080 | 1.8 | .0708 | 17.5 | 43 |
| 20507480 | 1.9 | .0748 | 17.5 | 43 |
| 20507870 | 2 | .0787 | 19 | 44 |
| 20508270 | 2.1 | .0827 | 19 | 44 |
| 20508660 | 2.2 | .0866 | 19 | 44 |
| 20509060 | 2.3 | .0906 | 19 | 44 |
| 20509450 | 2.4 | .0945 | 19 | 44 |
| 20509840 | 2.5 | .0984 | 2.5 | 46 |
| 20510240 | 2.6 | .1024 | 2.5 | 46 |
| 20510630 | 2.7 | .1063 | 2.5 | 46 |
| 20511020 | 2.8 | .1102 | 22 | 48 |
| 20511420 | 2.9 | .1142 | 22 | 48 |
| 20511810 | 3 | .1181 | 22 | 48 |
| 20512200 | 3.1 | .1220 | 22 | 48 |
| 20512600 | 3.2 | .1260 | 22 | 48 |
| 20512990 | 3.3 | .1299 | 24 | 49 |
| 20513390 | 3.4 | .1339 | 24 | 49 |
| 20513780 | 3.5 | .1378 | 24 | 49 |
| 20514170 | 3.6 | .1417 | 24 | 49 |
| 20514570 | 3.7 | .1457 | 25.5 | 52 |
| 20514960 | 3.8 | .1496 | 25.5 | 52 |
| 20515350 | 3.9 | .1535 | 25.5 | 52 |
| 20515750 | 4 | .1575 | 27 | 54 |
| 20516140 | 4.1 | .1614 | 27 | 54 |
| 20516540 | 4.2 | .1654 | 27 | 54 |
| 20516930 | 4.3 | .1693 | 27 | 54 |
| 20517320 | 4.4 | .1732 | 28.5 | 56 |
| 20517720 | 4.5 | .1772 | 28.5 | 56 |
| 20518110 | 4.6 | .1811 | 28.5 | 56 |
| 20518500 | 4.7 | .1850 | 28.5 | 56 |
| 20518890 | 4.8 | .1889 | 30 | 57 |
| 20519290 | 4.9 | .1929 | 30 | 57 |
| 20519680 | 5 | .1968 | 30 | 57 |
| 20520080 | 5.1 | .2008 | 30 | 57 |
| 20520470 | 5.2 | .2047 | 32 | 60 |
| 20520860 | 5.3 | .2086 | 32 | 60 |
| 20521260 | 5.4 | .2126 | 32 | 60 |
| 20521650 | 5.5 | .2165 | 32 | 60 |
| 20522050 | 5.6 | .2205 | 33.4 | 62 |
| 20522440 | 5.7 | .2244 | 33.4 | 62 |
| 20522830 | 5.8 | .2283 | 33.4 | 62 |
| 20523230 | 5.9 | .2323 | 33.4 | 62 |
| 20523620 | 6 | .2362 | 35 | 64 |
| 20524020 | 6.1 | .2402 | 35 | 64 |
| 20524410 | 6.2 | .2441 | 35 | 64 |
| 20524800 | 6.3 | .2480 | 35 | 64 |
| 20525190 | 6.4 | .2519 | 35 | 64 |
| 20525590 | 6.5 | .2559 | 36.5 | 67 |
| 20525980 | 6.6 | .2598 | 36.5 | 67 |
| 20526370 | 6.7 | .2637 | 36.5 | 67 |
| 20526770 | 6.8 | .2677 | 38 | 68 |
| 20527160 | 6.9 | .2716 | 38 | 68 |
| 20527560 | 7 | .2756 | 38 | 68 |
| 20527950 | 7.1 | .2795 | 38 | 68 |
| 20528340 | 7.2 | .2834 | 38 | 68 |
| 20528740 | 7.3 | .2874 | 38 | 68 |
| 20529130 | 7.4 | .2913 | 39.5 | 70 |
| 20529530 | 7.5 | .2953 | 39.5 | 70 |
| 20529920 | 7.6 | .2992 | 39.5 | 70 |
| 20530310 | 7.7 | .3031 | 41.5 | 71 |
| 20530710 | 7.8 | .3071 | 41.5 | 71 |
| 20531100 | 7.9 | .3110 | 41.5 | 71 |
| 20531500 | 8 | .3150 | 41.5 | 71 |
| 20531890 | 8.1 | .3189 | 43 | 75 |
| 20532280 | 8.2 | .3228 | 43 | 75 |
| 20532670 | 8.3 | .3267 | 43 | 75 |
| 20533070 | 8.4 | .3307 | 43 | 75 |
| 20533460 | 8.5 | .3346 | 43 | 75 |
| 20533850 | 8.6 | .3385 | 43 | 75 |
| 20534250 | 8.7 | .3425 | 43 | 75 |
| 20534640 | 8.8 | .3464 | 43 | 75 |
| 20535040 | 8.9 | .3504 | 44.5 | 78 |
| 20535430 | 9 | .3543 | 44.5 | 78 |
| 20535820 | 9.1 | .3582 | 44.5 | 78 |
| 20536220 | 9.2 | .3622 | 44.5 | 78 |
| 20536610 | 9.3 | .3661 | 46 | 79 |
| 20537000 | 9.4 | .3700 | 46 | 79 |
| 20537400 | 9.5 | .3740 | 46 | 79 |
| 20537790 | 9.6 | .3779 | 47.5 | 83 |
| 20538190 | 9.7 | .3819 | 47.5 | 83 |
| 20538580 | 9.8 | .3858 | 47.5 | 83 |
| 20538970 | 9.9 | .3897 | 47.5 | 83 |
| 20539370 | 10 | .3937 | 49 | 84 |
| 20539760 | 10.1 | .3976 | 49 | 84 |
| 20540150 | 10.2 | .4015 | 49 | 84 |
| 20540550 | 10.3 | .4055 | 49 | 84 |
| 20540940 | 10.4 | .4094 | 49 | 84 |
| 20541340 | 10.5 | .4134 | 51 | 86 |
| 20541730 | 10.6 | .4173 | 51 | 86 |
| 20542120 | 10.7 | .4212 | 51 | 86 |
| 20542520 | 10.8 | .4252 | 51 | 86 |
| 20542910 | 10.9 | .4291 | 52.5 | 87 |
| 20543310 | 11 | .4331 | 52.5 | 87 |
| 20543700 | 11.1 | .4370 | 52.5 | 87 |
| 20544090 | 11.2 | .4409 | 52.5 | 87 |
| 20544490 | 11.3 | .4449 | 54 | 92 |
| 20544880 | 11.4 | .4488 | 54 | 92 |
| 20545270 | 11.5 | .4527 | 54 | 92 |
| 20545670 | 11.6 | .4567 | 54 | 92 |
| 20546060 | 11.7 | .4606 | 54 | 92 |
| 20546450 | 11.8 | .4645 | 54 | 92 |
| 20546850 | 11.9 | .4685 | 54 | 92 |
| 20547240 | 12 | .4724 | 55.5 | 94 |
| 20549210 | 12.5 | .4921 | 57 | 95 |
| 20551180 | 13 | .5118 | 6.5 | 98 |
| 20553150 | 13.5 | .5315 | 63.5 | 102 |
| 20555120 | 14 | .5512 | 63.5 | 102 |
| 20557080 | 14.5 | .5708 | 66.5 | 105 |
| 20559050 | 15 | .5905 | 66.5 | 105 |
| 20561020 | 15.5 | .6102 | 70 | 108 |
| 20562990 | 16 | .6299 | 70 | 108 |
| 20564960 | 16.5 | .6496 | 73 | 114 |
| 20566930 | 17 | .6693 | 73 | 117 |
| 20568900 | 17.5 | .6890 | 76 | 121 |
| 20570870 | 18 | .7087 | 76 | 121 |
| 20572830 | 18.5 | .7283 | 79.5 | 127 |
| 20574800 | 19 | .7480 | 79.5 | 127 |
| 20578740 | 20 | .7874 | 82.5 | 133 |
Due to the fact that we are continuously improving our products, the descriptions, illustrations,
specifications,dimensions, and part numbers are subject to change without notice.
Every effort has been made to have the information on this site error free, we can not be responsible for errors and or omissions.