Twist Drill
AMERICAN STANDARD STRAIGHT SHANK TWIST DRILLS 90#~1#
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| Diameter of Drill | Flute Length | Overall Length | ||
| Inch | No.or Ltr | Millimeter Equivalent | L2 | L1 |
| mm | mm | |||
| 90 | 0.221 | 2 | 19 | |
| 89 | 0.231 | 2 | 19 | |
| 88 | 0.241 | 2 | 19 | |
| 87 | 0.254 | 2 | 19 | |
| 86 | 0.267 | 2.5 | 19 | |
| 85 | 0.280 | 2.5 | 19 | |
| 84 | 0.292 | 2.5 | 19 | |
| 83 | 0.305 | 2.5 | 19 | |
| 82 | 0.318 | 2.5 | 19 | |
| 81 | 0.33 | 2.5 | 19 | |
| 80 | 0.343 | 3 | 19 | |
| 79 | 0.368 | 3 | 19 | |
| 1/64 | 0.396 | 5 | 19 | |
| 0.400 | 5 | 19 | ||
| 78 | 0.406 | 5 | 22 | |
| 0.420 | 5 | 22 | ||
| 0.450 | 5 | 22 | ||
| 77 | 0.457 | 5 | 22 | |
| 0.480 | 5 | 22 | ||
| 0.550 | 5 | 22 | ||
| 76 | 0.508 | 5 | 22 | |
| 75 | 0.533 | 6 | 25 | |
| 0.550 | 6 | 25 | ||
| 74 | 0.572 | 6 | 25 | |
| 0.600 | 8 | 29 | ||
| 73 | 0.610 | 8 | 29 | |
| 72 | 0.635 | 8 | 29 | |
| 0.650 | 10 | 32 | ||
| 71 | 0.660 | 10 | 32 | |
| 0.700 | 10 | 32 | ||
| 70 | 0.711 | 10 | 32 | |
| 69 | 0.742 | 13 | 35 | |
| 0.750 | 13 | 35 | ||
| 68 | 0.787 | 13 | 35 | |
| 1/32 | 0.792 | 13 | 35 | |
| 0.800 | 13 | 35 | ||
| 67 | 0.813 | 13 | 35 | |
| 66 | 0.838 | 13 | 35 | |
| 0.850 | 16 | 38 | ||
| 65 | 0.889 | 16 | 38 | |
| 0.899 | 16 | 38 | ||
| 64 | 0.914 | 16 | 38 | |
| 63 | 0.940 | 16 | 38 | |
| 0.950 | 16 | 38 | ||
| 62 | 0.965 | 16 | 38 | |
| 61 | 0.991 | 17 | 41 | |
| 1.000 | 17 | 41 | ||
| 60 | 1.016 | 17 | 41 | |
| 59 | 1.041 | 17 | 41 | |
| 1.050 | 17 | 41 | ||
| 58 | 1.067 | 17 | 41 | |
| 57 | 1.092 | 19 | 44 | |
| 1.100 | 19 | 44 | ||
| 1.150 | 19 | 44 | ||
| 56 | 1.181 | 19 | 44 | |
| 3/64 | 1.191 | 19 | 44 | |
| 1.200 | 22 | 48 | ||
| 1.250 | 22 | 48 | ||
| 1.300 | 22 | 48 | ||
| 55 | 1.321 | 22 | 48 | |
| Diameter of Drill | Flute Length | Overall Length | ||
| Inch | No.or Ltr | Millimeter Equivalent | L2 | L1 |
| mm | mm | |||
| 1.350 | 22 | 48 | ||
| 54 | 1.397 | 22 | 48 | |
| 1.400 | 22 | 48 | ||
| 1.450 | 22 | 48 | ||
| 1.500 | 22 | 48 | ||
| 53 | 1.511 | 22 | 48 | |
| 1.550 | 22 | 48 | ||
| 1/15 | 1.588 | 22 | 48 | |
| 52 | 1.600 | 22 | 48 | |
| 1.613 | 22 | 48 | ||
| 1.650 | 25 | 51 | ||
| 1.700 | 25 | 51 | ||
| 51 | 1.702 | 25 | 51 | |
| 1.750 | 25 | 51 | ||
| 50 | 1.778 | 25 | 51 | |
| 1.800 | 25 | 51 | ||
| 1.850 | 25 | 51 | ||
| 49 | 1.859 | 25 | 51 | |
| 1.900 | 25 | 51 | ||
| 48 | 1.930 | 25 | 51 | |
| 1.950 | 25 | 51 | ||
| 5/64 | 1.984 | 25 | 51 | |
| 47 | 1.994 | 25 | 51 | |
| 2.000 | 25 | 51 | ||
| 2.050 | 29 | 54 | ||
| 46 | 2.057 | 29 | 54 | |
| 45 | 2.083 | 29 | 54 | |
| 2.100 | 29 | 54 | ||
| 2.150 | 29 | 54 | ||
| 44 | 2.184 | 29 | 54 | |
| 2.200 | 32 | 57 | ||
| 2.250 | 32 | 57 | ||
| 43 | 2.261 | 32 | 57 | |
| 2.300 | 32 | 57 | ||
| 2.350 | 32 | 57 | ||
| 42 | 2.375 | 32 | 57 | |
| 3/32 | 2.383 | 32 | 57 | |
| 2.400 | 35 | 60 | ||
| 41 | 2.438 | 35 | 60 | |
| 2.450 | 35 | 60 | ||
| 40 | 2.489 | 35 | 60 | |
| 2.500 | 35 | 60 | ||
| 39 | 2.527 | 35 | 60 | |
| 38 | 2.578 | 37 | 64 | |
| 2.600 | 37 | 64 | ||
| 37 | 2.642 | 37 | 64 | |
| 2.700 | 37 | 64 | ||
| 36 | 2.705 | 37 | 64 | |
| 7/64 | 2.779 | 38 | 67 | |
| 35 | 2.794 | 38 | 67 | |
| 2.800 | 38 | 67 | ||
| 34 | 2.819 | 38 | 67 | |
| 33 | 2.870 | 38 | 67 | |
| 2.900 | 41 | 70 | ||
| 32 | 2.946 | 41 | 70 | |
| 3.000 | 41 | 70 | ||
| 31 | 3.048 | 41 | 70 | |
| 3.100 | 41 | 70 | ||
| 1/8 | 3.175 | 41 | 70 | |
| 3.200 | 41 | 70 | ||
| Diameter of Drill | Flute Length | Overall Length | ||
| Inch | No.or Ltr | Millimeter Equivalent | L2 | L1 |
| mm | mm | |||
| 30 | 3.264 | 41 | 70 | |
| 3.300 | 44 | 73 | ||
| 3.400 | 44 | 73 | ||
| 29 | 3.454 | 44 | 73 | |
| 3.500 | 44 | 73 | ||
| 28 | 3.569 | 44 | 73 | |
| 9/64 | 3.571 | 44 | 73 | |
| 3.600 | 48 | 76 | ||
| 27 | 3.658 | 48 | 76 | |
| 3.700 | 48 | 76 | ||
| 26 | 3.734 | 48 | 76 | |
| 25 | 3.797 | 48 | 76 | |
| 3.800 | 48 | 76 | ||
| 24 | 3.861 | 51 | 79 | |
| 3.900 | 51 | 79 | ||
| 23 | 3.912 | 51 | 79 | |
| 5/32 | 3.967 | 51 | 79 | |
| 22 | 3.988 | 51 | 79 | |
| 4.000 | 54 | 83 | ||
| 21 | 4.039 | 54 | 83 | |
| 20 | 4.089 | 54 | 83 | |
| 4.100 | 54 | 83 | ||
| 4.200 | 54 | 83 | ||
| 19 | 4.216 | 54 | 83 | |
| 4.300 | 54 | 83 | ||
| 18 | 4.305 | 54 | 83 | |
| 11/64 | 4.366 | 54 | 83 | |
| 17 | 4.394 | 56 | 86 | |
| 4.400 | 56 | 86 | ||
| 16 | 4.496 | 56 | 86 | |
| 4.500 | 56 | 86 | ||
| 15 | 4.572 | 56 | 86 | |
| 4.600 | 56 | 86 | ||
| 14 | 4.632 | 56 | 86 | |
| 13 | 4.700 | 59 | 89 | |
| 3/16 | 4.762 | 59 | 89 | |
| 12 | 4.800 | 59 | 89 | |
| 11 | 4.851 | 59 | 89 | |
| 4.900 | 62 | 92 | ||
| 10 | 4.915 | 62 | 92 | |
| 9 | 4.978 | 62 | 92 | |
| 5.000 | 62 | 92 | ||
| 8 | 5.045 | 62 | 92 | |
| 5.100 | 62 | 92 | ||
| 7 | 5.105 | 62 | 92 | |
| 13/64 | 5.159 | 62 | 92 | |
| 6 | 5.182 | 64 | 95 | |
| 5.200 | 64 | 95 | ||
| 5 | 5.220 | 64 | 95 | |
| 5.300 | 64 | 95 | ||
| 4 | 5.309 | 64 | 95 | |
| 5.400 | 64 | 95 | ||
| 3 | 5.410 | 64 | 95 | |
| 5.500 | 64 | 95 | ||
| 7/32 | 5.558 | 64 | 95 | |
| 5.600 | 67 | 98 | ||
| 2 | 5.613 | 67 | 98 | |
| 5.700 | 67 | 98 | ||
| 1 | 5.791 | 67 | 98 | |