Straight Shank Countersink Drill Specification Table
| 180 degrees | |||||
| Specification | Small diameter | Large diameter | Total length | Small diameter blade length | Rod diameter |
| M3 | 3.4 | 6.5 | 65 | 13 | 6.5 |
| M4 | 4.5 | 8.0 | 75 | 18 | 8 |
| M5 | 5.5 | 9.5 | 85 | 22 | 9.5 |
| M6 | 6.6 | 11.0 | 90 | 25 | 11 |
| M8 | 9.0 | 14.0 | 100 | 28 | 12 |
| M10 | 11.0 | 17.5 | 110 | 30 | 12 |
| M12 | 14.0 | 20.0 | 115 | 32 | 12 |
| 1/4 | 6.85 | 11.0 | 90 | 25 | 11 |
| 05/16 | 8.55 | 14.0 | 100 | 28 | 12 |
| 3/8 | 10.1 | 15.0 | 110 | 30 | 12 |
| 1/2 | 13.5 | 20.0 | 115 | 32 | 12 |
| 90 degrees | |||||
| Specification | Small diameter | Large diameter | Total length | Small diameter blade length | Rod diameter |
| M3 | 3.4 | 6.4 | 65 | 35 | 6.4 |
| M4 | 4.5 | 8.4 | 75 | 42 | 8.4 |
| M5 | 5.5 | 10.4 | 85 | 50 | 10.4 |
| M6 | 6.6 | 12.5 | 90 | 53 | 12.0 |
| M8 | 9.0 | 16.5 | 100 | 53 | 12.0 |
Center Drill Specification Table
| Blade diameter (d) | Blade diameter tolerance | Blade length (L2) | Rod diameter (D) | Total length (L) |
| 0.4 | 0.05 -0.05 |
0.5 | 3.0 | 31 |
| 0.5 | 0.05 -0.05 |
0.6 | 3.0 | 31 |
| 0.6 | 0.05 -0.05 |
0.7 | 3.5 | 36 |
| 0.7 | 0.05 -0.05 |
0.8 | 3.5 | 36 |
| 0.8 | 0.05 -0.05 |
0.9 | 4.0 | 36 |
| 0.9 | 0.05 -0.05 |
1.0 | 4.0 | 36 |
| 1.0 | 0.05 -0.05 |
1.2 | 4.0 | 36 |
| 1.2 | 4.0 | 100 | ||
| 1.2 | 0.05 -0.05 |
1.4 | 5.0 | 42 |
| 1.5 | 0.05 -0.05 |
1.8 | 5.0 | 42 |
| 1.8 | 5.0 | 100 | ||
| 1.8 | 5.0 | 150 | ||
| 1.8 | 5.0 | 200 | ||
| 2.0 | 0.08 -0.08 |
2.4 | 5.0 | 42 |
| 2.4 | 6.0 | 100 | ||
| 2.4 | 6.0 | 150 | ||
| 2.4 | 6.0 | 200 | ||
| 2.5 | 0.08 -0.08 |
3.0 | 6.0 | 47 |
| 3.0 | 8.0 | 100 | ||
| 3.0 | 8.0 | 150 | ||
| 3.0 | 8.0 | 200 | ||
| 3.0 | 0.08 -0.08 |
3.6 | 7.7 | 57 |
| 3.6 | 10.0 | 100 | ||
| 3.6 | 10.0 | 150 | ||
| 3.6 | 10.0 | 200 | ||
| 3.2 | 0.08 -0.08 |
3.8 | 7.7 | 57 |
| 4.0 | 0.08 -0.08 |
4.8 | 10.0 | 69 |
| 4.8 | 10.0 | 100 | ||
| 4.8 | 10.0 | 150 | ||
| 4.8 | 10.0 | 200 | ||
| 5.0 | 0.12 -0.12 |
6.0 | 11.0 | 69 |
| 6.0 | 12.0 | 100 | ||
| 6.0 | 12.0 | 150 | ||
| 6.0 | 12.0 | 200 | ||
| 6.0 | 0.12 -0.12 |
8.0 | 16.0 | 90 |
| 8.0 | 0.12 -0.12 |
10.0 | 18.0 | 100 |
| 10.0 | 0.12 -0.12 |
12.0 | 18.0 | 100 |
| 12.0 | 0.12 -0.12 |
15.0 | 22.0 | 110 |
Code #1-#60
| Code | inch | mm |
| #1 | 0.228 | 5.79 |
| #two | 0.221 | 5.61 |
| #3 | 0.213 | 5.41 |
| #4 | 0.209 | 5.31 |
| #5 | 0.2055 | 5.22 |
| #6 | 0.204 | 5.18 |
| #7 | 0.201 | 5.11 |
| #8 | 0.199 | 5.05 |
| #9 | 0.196 | 4.98 |
| #10 | 0.1935 | 4.91 |
| #11 | 0.191 | 4.85 |
| #12 | 0.189 | 4.80 |
| #13 | 0.185 | 4.70 |
| #14 | 0.182 | 4.62 |
| #15 | 0.18 | 4.57 |
| #16 | 0.177 | 4.50 |
| #17 | 0.173 | 4.39 |
| #18 | 0.1695 | 4.31 |
| #19 | 0.166 | 4.22 |
| #20 | 0.161 | 4.09 |
| #21 | 0.159 | 4.04 |
| #22 | 0.157 | 3.99 |
| #23 | 0.154 | 3.91 |
| #24 | 0.152 | 3.86 |
| #25 | 0.1495 | 3.80 |
| #26 | 0.147 | 3.73 |
| #27 | 0.144 | 3.66 |
| #28 | 0.1405 | 3.57 |
| #29 | 0.136 | 3.45 |
| #30 | 0.1285 | 3.26 |
| #31 | 0.12 | 3.05 |
| #32 | 0.116 | 2.95 |
| #33 | 0.113 | 2.87 |
| #34 | 0.111 | 2.82 |
| #35 | 0.11 | 2.79 |
| #36 | 0.1065 | 2.71 |
| #37 | 0.104 | 2.64 |
| #38 | 0.1015 | 2.58 |
| #39 | 0.0995 | 2.53 |
| #40 | 0.098 | 2.49 |
| #41 | 0.096 | 2.44 |
| #42 | 0.0935 | 2.37 |
| #43 | 0.089 | 2.26 |
| #44 | 0.086 | 2.18 |
| #45 | 0.082 | 2.08 |
| #46 | 0.081 | 2.06 |
| #47 | 0.0785 | 1.99 |
| #48 | 0.076 | 1.93 |
| #49 | 0.073 | 1.85 |
| #50 | 0.07 | 1.78 |
| #51 | 0.067 | 1.70 |
| #52 | 0.0635 | 1.61 |
| #53 | 0.0595 | 1.51 |
| #54 | 0.055 | 1.40 |
| #55 | 0.052 | 1.32 |
| #56 | 0.0465 | 1.18 |
| #57 | 0.043 | 1.09 |
| #58 | 0.042 | 1.07 |
| #59 | 0.041 | 1.04 |
| #60 | 0.04 | 1.02 |
Code #A-#Z
| Code | inch | mm |
| #A | 0.234 | 5.94 |
| #B | 0.238 | 6.05 |
| #W | 0.242 | 6.15 |
| #D | 0.246 | 6.25 |
| #AND | 0.25 | 6:35 am |
| #F | 0.257 | 6.53 |
| #G | 0.261 | 6.63 |
| #H | 0.266 | 6.76 |
| #I | 0.272 | 6.91 |
| #J | 0.277 | 7.04 |
| #K | 0.281 | 7.14 |
| #I | 0.29 | 7.37 |
| #M | 0.295 | 7.49 |
| #N | 0.302 | 7.67 |
| #O | 0.316 | 8.03 |
| #P | 0.326 | 8.28 |
| #Q | 0.332 | 8.43 |
| #R | 0.339 | 8.61 |
| #S | 0.348 | 8.84 |
| #T | 0.358 | 9.09 |
| #YOU | 0.368 | 9:35 am |
| #V | 0.377 | 9.58 |
| #W | 0.386 | 9.80 |
| #X | 0.397 | 10.08 |
| #S | 0.404 | 10.26 |
| #Z | 0.413 | 10:49 am |
Code #1/16.-#1/2.inch
| Code | inch | mm |
| 16/01. | 0.0625 | 1.59 |
| 5/64. | 0.0781 | 1.98 |
| 03/32. | 0.0938 | 2.38 |
| 7/64. | 0.1094 | 2.78 |
| 1/8. | 0.125 | 3.18 |
| 9/64. | 0.1406 | 3.57 |
| 32/05. | 0.1563 | 3.97 |
| 11/64. | 0.1719 | 4.37 |
| 03/16. | 0.1875 | 4.76 |
| 13/64. | 0.2031 | 5.16 |
| 32/07. | 0.2188 | 5.56 |
| 15/64. | 0.2344 | 5.95 |
| 1/4. | 0.25 | 6:35 am |
| 17/64. | 0.2656 | 6.75 |
| 32/09. | 0.2812 | 7.14 |
| 19/64. | 0.2969 | 7.54 |
| 16/05. | 0.3125 | 7.94 |
| 21/64 | 0.3281 | 8.33 |
| 11/32. | 0.3438 | 8.73 |
| 23/64. | 0.3594 | 9.13 |
| 3/8. | 0.375 | 9.53 |
| 25/64. | 0.3906 | 9.92 |
| 13/32. | 0.4063 | 10:32 am |
| 27/64. | 0.4219 | 10.72 |
| 16/07. | 0.4375 | 11.11 |
| 29/64. | 0.4531 | 11.51 |
| 15/32. | 0.4688 | 11.91 |
| 31/64. | 0.4844 | 12.3 |
| 1/2. | 0.5 | 12.7 |
