API Thread Guide

API Thread Guide
 API THREAD GUIDE
       
 Thread  (A) Major Thread
Dia. Pin
(B)
Length
of Pin
(C)
O.D.
(D)
Major Thread
Dia. Box
(E)
Length
of Box
(F) 
 2 3/8" API Reg.  3 3/8"  2 1/2"  2 7/8"  3 3/8"  2 11/16"  3 1/8"
 2 7/8" API Reg.  3 7/8"  2 7/8"  3 3/8"  3 7/8"  3 1/16"  3 5/8"
 3 1/2" API Reg.  4 3/8"  3 3/8"  3 5/8"  4 3/8"  3 9/16"  3 7/8"
 4 1/2" API Reg.  5 3/4"  4 1/2"  4 1/8"  5 3/4"  4 3/8"  4 11/26"
 2 3/8" API IF  3 5/8"  2 3/4"  2 7/8"  3 5/8"  2 15/16"  3 1/8"
2 7/8" API IF  4 1/4"  3 1/4"  3 3/8"  4 1/4"  3 1/2"  3 5/8"
3 1/2" API IF  5"  3 7/8"  3 7/8"  5"  4 1/8"  4 1/8"
4 1/2" API IF  6 3/4"  5 1/8"  4 3/8"  6 3/4"  5 5/16"  4 5/8"
2 3/8" MHJR  2 3/4"  2 21/64  2 1/4  4"  2"  1 1/2"

 

 

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