3b 2nd end thread class wrenching feature second end, hex.nut, 0.156 in. thk, 1.250 in.w across flats, 3 lockwire holes, 0.045 in.min, 0.050 in.max dia unf 1st end thread series
3a all ends thread class 3.546" overall length 12 all ends thread quantity per inch cadmium body surface treated male coupling half un all ends thread series