3a all ends thread class 2.820" overall length grumman aircraft corp, a-10 aircraft model passivate body surface treated male coupling half unf all ends thread series
Used on aircraft application. 0.250" outside diameter inlet end 0.370 inch dia; 2 side holes, 180 degrees apart-drill .076-.081 inch dia; from each one of side holes 2 holes eccentric-drilled .031-.033 inch dia
Used on detroit diesel engine powered landing craft, navy design lcm 8, mod 1. 2a 2nd end thread class 12 all ends thread quantity per inch un all ends thread series