Used on close in weapon system (ciws-phalanx); submarine submarine surveillance systems; engine, aircraft tf33-pw-102 (c-135e, ec-135h/k/p); fire pumps; stream (std. tensioned replenishment at sea method); l.p. compressors; fire control system, missile mk 74 (fcs); gun mount, mk 75 (gm); aircraft, sof ( ac-130h, mc-130h, ec-130e, hc-130). 0.203" center hole diameter