Used on b-1 aircraft support equipment. b-52 aircraft support equipment. tf33-p-3/5/9 (c/ec-135, b-52h) aircraft engine. h-3 helicopter support equipment.. 3b thread class right-hand 20 thread quantity per inch weapon system essential. grumman a-10 aircraft anodize surface treated
3b thread class right-hand 12 thread quantity per inch w/one 0.069 min-0.074 max in. dia lock-wire hole, 0.402 in. from thd end passivate surface treated