Numbered Connections (N.C.)

Numbered Connections (N.C.)

Northern gauge

API Numbered Connections (N.C.) working, reference and regional master gages per API specification 7-2 for sizes from 2 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.

NUMBERED CONNECTIONS (N.C.)
SIZE T.P.I. T.P.F. THD FORM
NC10 6 1-1/2 V-0.055R
NC12 6 1-1/2 V-0.055R
NC13 6 1-1/2 V-0.055R
NC16 6 1-1/2 V-0.055R
NC23 4 2 V-0.038R
NC26 (2-3/8 I.F.) 4 2 V-0.038R
NC31 (2-7/8 I.F.) 4 2 V-0.038R
NC35 4 2 V-0.038R
NC38 (3-1/2 I.F.) 4 2 V-0.038R
NC40 (4 FH) 4 2 V-0.038R
NC44 4 2 V-0.038R
NC46 4 2 V-0.038R
NC50 (4-1/2 IF) (5 XH) 4 2 V-0.038R
NC56 4 3 V-0.038R
NC61 4 3 V-0.038R
NC70 4 3 V-0.038R
NC77 4 3 V-0.038R