WASHER - LOCK SPLIT (Nissan NI89152421A)

NI89152421A: A damaged lock washer can allow threaded fasteners to loosen under vibration. During assembly, a split lock washer resists rotation by embedding its edges into the mating surfaces. The catalog reference is Nissan part number NI89152421A, offered here as an aftermarket replacement. This hardware washer type provides a plain mechanical function of creating tension between a nut and the joint. A common failure consequence is that a missing or worn split washer leads to fastener back-out and joint separation. Keeping a split washer in sound condition helps maintain clamp load in bolted connections. Verify the serial number or application, then call (562) 693-7748.

Part number variants: NI89152421A, ni89152421a