3a all ends thread class 12 all ends thread quantity per inch 1st end bulkhead 1.062-12 in., unj, cl 3a anodize surface treated unj all ends thread series
3a all ends thread class 1.700" overall length minus 65 deg td 400 deg f vacuum, extreme temp lubrication silicone grease passivate body surface treated male coupling half unf all ends thread series
3a all ends thread class 1.390" overall length w/two safety wire holes, 0.062 in id, in hex wrenching feature passivate body surface treated male coupling half unf all ends thread series