drain located in middle of body, 1.315 o.d., 1 i.n.X11 1/2 straight pipe threads, 45 degree seat angle rigid, short center wrenching facility npt center bulkhead thread series
3a all ends thread class 4.016" overall length 12 all ends thread quantity per inch passivate body surface treated male coupling half un all ends thread series
2a 2nd end thread class 12 2nd end thread quantity per inch features must conform to special quality control provisions for (hx) propulsion un 2nd end thread series