API Spec 7 Gauges

NC77 4 3 V-0.38R 1:4
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NUMBERED CONNECTIONS (N.C.) WORKING/MASTERS/TAPERS
SIZE T.P.I T.P.F THD FORM TAPER ANGLE
NC10 6 1-1/2 V-0.055R 1:8 60°
NC12 6 1-1/2 V-0.055R 1:8
NC13 6 1-1/2 V-0.055R 1:8
NC16 6 1-1/2 V-0.055R 1:8
NC23 4 2 V-0.38R 1:6
NC26(2 3/8IF) 4 2 V-0.38R(V-0.065) 1:6
NC31(2 7/8IF) 4 2 V-0.38R(V-0.065) 1:6
NC35 4 2 V-0.38R 1:6
NC38(3 1/2IF) 4 2 V-0.38R(V-0.065) 1:6
NC40(4FH) 4 2 V-0.38R(V-0.065) 1:6
NC44 4 2 V-0.38R(V-0.065) 1:6
NC46(4 IF) 4 2 V-0.38R(V-0.065) 1:6
NC50(4 1/2IF) (5 X.H) 4 2 V-0.38R 1:6
NC56 4 3 V-0.38R 1:4
NC61 4 3 V-0.38R 1:4
NC70 4 3 V-0.38R 1:4
NC77 4 3 V-0.38R 1:4