| PART NO.SIZE | TUBE 0.0. | B1 THREAD | A2 NPTF | B1 DRILL | A2 DRILL | M LGTH | N LGTH | K DEPTH | Y FLATS |
| C2503-04-02-FG | 1/4 | 7/16-20 | 1/8-27 | 0.203 | 0.188 | 0.70 | 0.64 | 0.234 | 0.438 |
| C2503-04-04-FG | 1/4 | 7/16-20 | 1/4-18 | 0.203 | 0.281 | 0.81 | 0.86 | 0.234 | 0.562 |
| C2503-06-04-FG | 3/8 | 9/16-18 | 1/4-18 | 0.281 | 0.281 | 0.83 | 0.86 | 0.250 | 0.562 |
| C2503-06-06-FG | 3/8 | 9/16-18 | 3/8-18 | 0.281 | 0.406 | 0.87 | 0.95 | 0.250 | 0.750 |
| C2503-06-08-FG | 3/8 | 9/16-18 | 1/2-14 | 0.281 | 0.531 | 0.90 | 1.17 | 0.250 | 0.875 |
| C2503-08-06-FG | 1/2 | 3/4-16 | 3/8-18 | 0.422 | 0.406 | 0.98 | 0.95 | 0.305 | 0.750 |
| C2503-08-08-FG | 1/2 | 3/4-16 | 1/2-14 | 0.422 | 0.531 | 1.01 | 1.17 | 0.305 | 0.875 |
| C2503-08-12-FG | 1/2 | 3/4-16 | 3/4-14 | 0.422 | 0.719 | 1.12 | 1.20 | 0.305 | 1.062 |
| C2503-10-06-FG | 5/8 | 7/8-14 | 3/8-18 | 0.500 | 0.406 | 1.08 | 0.98 | 0.350 | 0.875 |
| C2503-10-08-FG | 5/8 | 7/8-14 | 1/2-14 | 0.500 | 0.531 | 1.08 | 1.17 | 0.350 | 0.875 |
| C2503-12-08-FG | 3/4 | 1-1/16-12 | 1/2-14 | 0.656 | 0.531 | 1.27 | 1.20 | 0.350 | 1.062 |
| C2503-12-12-FG | 3/4 | 1-1/16-12 | 3/4-14 | 0.656 | 0.719 | 1.27 | 1.20 | 0.350 | 1.062 |
| C2503-16-16-FG | 1 | 1-5/16-12 | 1-11 1/2 | 0.875 | 0.938 | 1.36 | 1.48 | 0.415 | 1.312 |
| C2503-20-20-FG | 1-1/4 | 1-5/8-12 | 1-1/4-11 1/2 | 1.093 | 1.250 | 1.45 | 1.67 | 0.415 | 1.625 |