3a all ends thread class 3.440" overall length 12 all ends thread quantity per inch passivate body surface treated male coupling half un all ends thread series
3a all ends thread class 2.540" overall length bulkhead threads located on fluid connection end cadmium or paint body surface treated male coupling half unf all ends thread series
3a all ends thread class 12 all ends thread quantity per inch passivate inside surface treated flared w/ center wrenching facility un all ends thread series