BESTO supply API Full Hole (F.H.) working, reference 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 |
Instructions:
1）Implementation of standards：API SPEC7-2：2017
2）Material: GCr15， Measuring surface hardness 60-63HRC;
3）Comes with the calibration certificates .
How to order?
For example:
Pls mark : Working Gauges:6 5/8 FH RING&PLUG, or6 5/8 FH BOX&PIN,
and E-mail to: sales@bestogages.com