Used on weapons code fmf, aircraft, b-2 bomber. 3a center bulkhead thread class 16 center bulkhead thread quantity per inch union, bulkhead cryofit compatible rigid w/offset wrenching facility unj center bulkhead thread series
Used on aircraft, b-2 bomber. 3a 1st end bulkhead thread class 14 all ends thread quantity per inch tube coupling rigid, center wrenching facility unjs 1st end bulkhead thread series
Used on acft.,airlifter c-17a. 3a 2nd end thread class 12 2nd end thread quantity per inch internal bore polytetrafluoroethylene (ptfe) coated to first groove swaged unj 2nd end thread series