WASHER - LOCK (JLG JL49407)

A damaged lock washer can allow a fastener to loosen under vibration, leading to component separation. During assembly, a lock washer's split or toothed design resists rotational loosening. The aftermarket replacement part cross-references JLG part number JL49407. This washer type provides a plain mechanical function by creating tension between the fastener head and the mating surface. A concrete generic failure consequence is that a missing or crushed lock washer may cause the fastener to back out, risking joint failure. Keeping a lock washer in sound condition helps maintain clamping force in bolted connections. Verify the serial number or application, then call (562) 693-7748. The item ships at approximately 0.004 pounds.

Part number variants: JL49407, jl49407