3a all ends thread class 3.078" overall length bulkhead, 0.750 unjf-3a thd, located on fluid end connection; viton seal cadmium body surface treated male coupling half unjf all ends thread series
3a all ends thread class 2.750" overall length bulkhead thd on fluid connection end; viton seal cadmium body surface treated male coupling half unjf all ends thread series