PIN-COTTER 5MMODX45 (Nissan NI00921-5451A)

NI00921-5451A: A worn cotter pin can lead to fastener loosening and component separation during operation. This aftermarket replacement part references Nissan as the OE maker and carries the cross-reference number NI00921-5451A. The pin-cotter is a hardware pin type used to secure clevis pins or other fasteners by passing through a hole and spreading its legs. Its plain mechanical function is to lock a mating fastener in place through positive retention. A generic failure consequence is that a missing or broken cotter pin allows the retained part to slide out, causing sudden mechanical disconnection. Keeping a cotter pin in sound condition helps maintain joint integrity under vibration. Verify the serial number or application, then call (562) 693-7748.

Part number variants: NI00921-5451A, ni00921-5451a, NI009215451A, ni009215451a