| Diameter Range | Tool Number | |||
| INCHES | MM | THRU-HOLE | THRU-HOLE | BOTTOMING |
| No Helix | Helix | No Helix | ||
| 187-.195 | 4.75-4.95 | SR-188 | SRH-188 | ———— |
| .194-.202 | 4.93-5.13 | SR-195 | SRH-195 | ———— |
| .202-.210 | 5.13-5.33 | SR-203 | SRH-203 | ———— |
| .210-.218 | 5.33-5.54 | SR-211 | SRH-211 | ———— |
| .218-.226 | 5.54-5.74 | SR-219 | SRH-219 | ———— |
| .225-.233 | 5.72-5.92 | SR-226 | SRH-226 | ———— |
| .233-.241 | 5.92-6.12 | SR-234 | SRH-234 | ———— |
| .241-.249 | 6.12-6.32 | SR-242 | SRH-242 | ———— |
| Diameter Range | Tool Number | |||
| INCHES | MM | THRU-HOLE | THRU-HOLE | BOTTOMING |
| No Helix | Helix | No Helix | ||
| .246-.267 | 6.25-6.78 | SR-250 | SRH-250 | SRB-250 |
| .262-.283 | 6.65-7.19 | SR-266 | SRH-266 | SRB-266 |
| .277-.298 | 7.04-7.57 | SR-281 | SRH-281 | SRB-281 |
| .293-.314 | 7.44-7.98 | SR-297 | SRH-297 | SRB-297 |
| .308-.329 | 7.82-8.36 | SR-312 | SRH-312 | SRB-312 |
| .324-.345 | 8.23-8.76 | SR-328 | SRH-328 | SRB-328 |
| .340-.361 | 8.64-9.17 | SR-344 | SRH-344 | SRB-344 |
| .355-.376 | 9.02-9.55 | SR-359 | SRH-359 | SRB-359 |
| .371-.392 | 9.42-9.96 | SR-375 | SRH-375 | SRB-375 |
| .387-.408 | 9.83-10.36 | SR-391 | SRH-391 | SRB-391 |
| .402-.423 | 10.21-10.74 | SR-406 | SRH-406 | SRB-406 |
| .418-.439 | 10.62-11.15 | SR-422 | SRH-422 | SRB-422 |
| .434-.455 | 11.02-11.56 | SR-438 | SRH-438 | SRB-438 |
| .449-.470 | 11.40-11.94 | SR-453 | SRH-453 | SRB-453 |
| .465-.486 | 11.81-12.34 | SR-469 | SRH-469 | SRB-469 |
| .480-.501 | 12.19-12.73 | SR-484 | SRH-484 | SRB-484 |
| Diameter Range | Tool Number | |||
| INCHES | MM | THRU-HOLE | THRU-HOLE | BOTTOMING |
| No Helix | Helix | No Helix | ||
| .996-1.037 | 25.30-26.34 | SR-1000 | SRH-1000 | SRB-1000 |
| 1.027-1.068 | 26.09-27.13 | SR-1031 | SRH-1031 | SRB-1031 |
| 1.058-1.099 | 26.87-27.91 | SR-1062 | SRH-1062 | SRB-1062 |
| 1.090-1.131 | 27.69-28.73 | SR-1094 | SRH-1094 | SRB-1094 |
| 1.121-1.162 | 28.47-29.51 | SR-1125 | SRH-1125 | SRB-1125 |
| 1.152-1.193 | 29.26-30.30 | SR-1156 | SRH-1156 | SRB-1156 |
| 1.184-1.225 | 30.07-31.12 | SR-1188 | SRH-1188 | SRB-1188 |
| 1.215-1.256 | 30.86-31.90 | SR-1219 | SRH-1219 | SRB-1219 |
| 1.246-1.287 | 31.65-32.69 | SR-1250 | SRH-1250 | SRB-1250 |
| 1.277-1.318 | 32.44-33.48 | SR-1281 | SRH-1281 | SRB-1281 |
| 1.308-1.349 | 33.22-34.26 | SR-1312 | SRH-1312 | SRB-1312 |
| 1.340-1.381 | 34.04-35.08 | SR-1344 | SRH-1344 | SRB-1344 |
| 1.371-1.412 | 34.82-35.86 | SR-1375 | SRH-1375 | SRB-1375 |
| 1.402-1.443 | 35.61-36.65 | SR-1406 | SRH-1406 | SRB-1406 |
| 1.434-1.475 | 36.42-37.47 | SR-1438 | SRH-1438 | SRB-1438 |
| 1.465-1.506 | 37.21-38.25 | SR-1469 | SRH-1469 | SRB-1469 |
| 1.496-1.537 | 38.00-39.04 | SR-1500 | SRH-1500 | SRB-1500 |
| 1.527-1.568 | 38.79-39.83 | SR-1531 | SRH-1531 | SRB-1531 |
| 1.558-1.599 | 39.57-40.61 | SR-1562 | SRH-1562 | SRB-1562 |
| 1.590-1.631 | 40.39-41.43 | SR-1594 | SRH-1594 | SRB-1594 |
| Diameter Range | Tool Number | |||
| INCHES | MM | THRU-HOLE | THRU-HOLE | BOTTOMING |
| No Helix | Helix | No Helix | ||
| 1.621-1.662 | 41.17-42.21 | SR-1625 | SRH-1625 | SRB-1625 |
| 1.652-1.693 | 41.96-43.00 | SR-1656 | SRH-1656 | SRB-1656 |
| 1.684-1.725 | 42.77-43.82 | SR-1688 | SRH-1688 | SRB-1688 |
| 1.715-1.756 | 43.56-44.60 | SR-1719 | SRH-1719 | SRB-1719 |
| 1.746-1.787 | 44.35-45.39 | SR-1750 | SRH-1750 | SRB-1750 |
| 1.777-1.818 | 45.14-46.18 | SR-1781 | SRH-1781 | SRB-1781 |
| 1.808-1.849 | 45.92-46.96 | SR-1812 | SRH-1812 | SRB-1812 |
| 1.840-1.881 | 46.74-47.78 | SR-1844 | SRH-1844 | SRB-1844 |
| Diameter Range | Tool Number | |||
| INCHES | MM | THRU-HOLE | THRU-HOLE | BOTTOMING |
| No Helix | Helix | No Helix | ||
| 1.871-1.912 | 47.52-48.56 | SR-1875 | SRH-1875 | SRB-1875 |
| 1.902-1.943 | 48.31-49.35 | SR-1906 | SRH-1906 | SRB-1906 |
| 1.934-1.975 | 49.12-50.17 | SR-1938 | SRH-1938 | SRB-1938 |
| 1.965-2.006 | 49.91-50.95 | SR-1969 | SRH-1969 | SRB-1969 |
| 1.996-2.037 | 50.70-51.74 | SR-2000 | SRH-2000 | SRB-2000 |
| 2.027-2.068 | 51.49-52.53 | SR-2031 | SRH-2031 | SRB-2031 |
| 2.058-2.099 | 52.27-53.31 | SR-2062 | SRH-2062 | SRB-2062 |
| 2.090-2.131 | 53.09-54.13 | SR-2094 | SRH-2094 | SRB-2094 |
| 2.121-2.162 | 53.87-54.91 | SR-2125 | SRH-2125 | SRB-2125 |
| Diameter Range | Tool Number | |||
| INCHES | MM | THRU-HOLE | THRU-HOLE | BOTTOMING |
| No Helix | Helix | No Helix | ||
| 2.152-2.193 | 54.66-55.70 | SR-2156 | SRH-2156 | SRB-2156 |
| 2.184-2.225 | 55.47-56.52 | SR-2188 | SRH-2188 | SRB-2188 |
| 2.215-2.256 | 56.26-57.30 | SR-2219 | SRH-2219 | SRB-2219 |
| 2.246-2.287 | 57.05-58.09 | SR-2250 | SRH-2250 | SRB-2250 |
| 2.277-2.318 | 57.84-58.88 | SR-2281 | SRH-2281 | SRB-2281 |
| 2.308-2.349 | 58.62-59.66 | SR-2312 | SRH-2312 | SRB-2312 |
| 2.340-2.381 | 59.44-60.48 | SR-2344 | SRH-2344 | SRB-2344 |
| 2.371-2.412 | 60.22-61.26 | SR-2375 | SRH-2375 | SRB-2375 |
| 2.402-2.443 | 61.01-62.05 | SR-2406 | SRH-2406 | SRB-2406 |
| 2.434-2.475 | 61.82-62.87 | SR-2438 | SRH-2438 | SRB-2438 |
| 2.465-2.506 | 62.61-63.65 | SR-2469 | SRH-2469 | SRB-2469 |
| 2.496-2.537 | 63.40-64.44 | SR-2500 | SRH-2500 | SRB-2500 |
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