cotter pin retaining pin

gudgeon pin [= crosshead pin]

pin-for-pin

pin-to-pin leakage

pin-to-pin reducer

apron trunnion

axle trunnion

axle trunnion bearing

axle trunnion ring

ball trunnion

barrel trunnion

bearing trunnion

bulldozer blade trunnion

bulldozer blade trunnion ball

bulldozer cylinder trunnion bearing

bulldozer trunnion

bulldozer trunnion ball

bulldozer trunnion group

center height of trunnion