3b 2nd end thread class epa/gov has determined not to use cadmium; contact dcsc-ssi; piece is stamped which end is left hand threads zinc surface treated threaded internal unf 1st end thread series
3a 1st end bulkhead thread class 14 1st end bulkhead thread quantity per inch cryofit rigid w/offset wrenching facility unjs 1st end bulkhead thread series
3a 2nd end thread class 24 1st end thread quantity per inch passivate surface treated threaded external rigid, threaded internal swivel unjs 1st end thread series
3a 2nd end thread class 20 1st end thread quantity per inch passivate surface treated threaded external rigid, threaded internal swivel unjs 1st end thread series
3a 2nd end thread class 20 1st end thread quantity per inch passivate surface treated threaded external rigid, threaded internal swivel unjs 1st end thread series
3a 2nd end thread class 18 2nd end thread quantity per inch passivate surface treated threaded external rigid, threaded internal swivel unjs 1st end thread series
3a 2nd end thread class 16 1st end thread quantity per inch passivate surface treated threaded external rigid, threaded internal swivel unj 1st end thread series