WASHER-LOCK (Nissan NI58644-31K00)

A damaged lock washer can allow threaded fasteners to loosen under vibration, leading to component separation. During assembly, this aftermarket replacement part, cross-referenced to Nissan part number NI58644-31K00, provides a locking function by deforming under torque. The washer's split or toothed design creates tension that resists rotational loosening. A loose fastener in a drivetrain or chassis connection may cause misalignment or premature wear. Keeping this washer in sound condition helps maintain clamp load in bolted joints. The item ships at approximately 0.016 pounds. Verify the serial number or application, then call (562) 693-7748.

Part number variants: NI58644-31K00, ni58644-31k00, NI5864431K00, ni5864431k00