LOCKNUT M55 (Nissan NI9794320123)

A damaged locknut can cause threaded fasteners to loosen under vibration, leading to mechanical failure. During inspection, a locknut's condition affects the security of bolted joints in various assemblies. The locknut type provides a plain mechanical function by creating friction between threads to resist loosening. A concrete generic failure consequence is that a loose fastener may allow components to separate during operation. Keeping a locknut in sound condition helps maintain joint integrity over time. This aftermarket replacement part references Nissan as the OE maker and carries the cross-reference part number NI9794320123. The catalog lists the specification as M55. Verify the serial number or application, then call (562) 693-7748. The item ships at approximately 0.354 POUNDS.

Part number variants: NI9794320123, ni9794320123