Used on conderoga class cg (47),ssbn mk-118 fire control sys,aircraft,orion p-3,communications systems,an/wrr-7,sturgeon class ssn (637),submarine verticallaunch system (vls),elevators,cargo/weapons,losangeles class ssn (688), engine,aircraft f-117, pw-100 (c-17a), virginia class cgn (41).. 3b thread class right-hand 13 thread quantity per inch