Used on rtf33-p-3/5/9 (c/ec-135, b-52h) aircraft engine. tf33-pw-102 (c-135e, ec-135h/k/p), sh-60f asw carrier based helicopter. mh-53e helicopter. tf-33-p-7 (c-141 a/b) aircraft engine. lamps mk iii landing system helicopter.. 3b thread class right-hand 16 thread quantity per inch weapon system essential passivate surface treated
3b thread class right-hand 18 thread quantity per inch drilled for locking device two 0.050 in. dia holes drilled through opposing corners, parrallel to each other, at 90 deg angle to center line of hole passivate surface treated