Full Hole (F.H.)
PMC Lone Star manufactures API Full Hole (F.H.) working, reference and regional master gages per API specification 7-2 for sizes from 2-7/8 to 6-5/8 inches in diameter. All working gages are manufactured and certified using a certified API reference master gage as required by the standard.
| FULL HOLE (F.H.) | |||
|---|---|---|---|
| SIZE | T.P.I. | T.P.F. | THD FORM |
| 2-7/8 | 5 | 3 | V-0.040 |
| 3-1/2 | 5 | 3 | V-0.040 |
| 4 (NC40) | 4 | 2 | V-0.065 |
| 4-1/2 | 5 | 3 | V-0.040 |
| 5-1/2 | 4 | 2 | V-0.050 |
| 6-5/8 | 4 | 2 | V-0.050 |
