| PART NO.SIZE | TUBE 0.0. | B1 THREAD | A2 NPTF | B1 DRILL | A2 DRILL | M LGTH | N LGTH | K DEPTH | Y FLATS |
| C2501-L-04-02-FG | 1/4 | 7/16-20 | 1/8-27 | 0.203 | 0.188 | 0.89 | 1.17 | 0.234 | 0.438 |
| C2501-L-04-04-FG | 1/4 | 7/16-20 | 1/4-18 | 0.203 | 0.281 | 1.03 | 1.58 | 0.234 | 0.562 |
| C2501-L-05-04-FG | 5/16 | 1/2-20 | 1/4-18 | 0.234 | 0.281 | 0.95 | 1.58 | 0.250 | 0.562 |
| C2501-L-06-06-FG | 3/8 | 9/16-18 | 3/8-18 | 0.281 | 0.406 | 1.14 | 1.82 | 0.250 | 0.750 |
| C2501-L-12-12-FG | 3/4 | 1-1/16-12 | 3/4-14 | 0.656 | 0.719 | 1.58 | 2.44 | 0.350 | 1.062 |
| C2501-L-16-16-FG | 1 | 1-5/16-12 | 1-11 1/2 | 0.875 | 0.938 | 1.73 | 3.01 | 0.415 | 1.312 |
| C2501-L-20-20-FG | 1-1/4 | 1-5/8-12 | 1-1/4-11 1/2 | 1.093 | 1.250 | 1.89 | 3.69 | 0.415 | 1.625 |
| C2501-L-24-24-FG | 1-1/2 | 1-7/8-12 | 1-1/2-11 1/2 | 1.344 | 1.500 | 2.02 | 4.10 | 0.485 | 1.875 |
| C2501-L-32-32-FG | 2 | 2-1/2-12 | 2-11 1/2 | 1.813 | 1.938 | 2.45 | 4.48 | 0.485 | 2.500 |