Full Hole (F.H)

Full Hole (F.H)

Northern Gauge 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