cross-pin cardan joint

arming pin; safety pin

firing pin retaining pin

track pin retaining pin

belt-feed pawl pin / belt feed pawl pin

cross-pin

frame cross member / frame cross-member

echoing cross-section; echoing cross section

radar cross-section / radar cross section (RCS); radar signature; radar crossover

deflector clip joint pin

elevating screw joint pin nut

universal-joint center cross

cross and yoke universal-joint needle bearing

Allied Joint Doctrine for Joint Targeting (AJP-3.9)

Joint Information Operations Center /Joint Intelligence Operations Center (JIOC)

U-joint (universal joint / universal coupling)

firing pin

pin

piston pin

pivot pin

safety-pin ring

sear pin

pin assembly

axle-tree retaining bolt locking pin

blade retaining pin

bolt handle spring retaining pin

cap retaining pin

cap retaining pin bushing

cap retaining pin bushing assembly

cap retaining pin screw

cap retaining pin spring

ejector retaining pin

ejector spring retaining pin