LOCKNUT - NYLON - JAM (JLG JL88521306)

A damaged locknut can compromise threaded joint security, leading to loosening under vibration. During inspection, a nylon-insert jam nut may show wear that reduces its prevailing torque. The locknut type relies on a nylon collar to create friction against the bolt threads, resisting self-loosening. A common failure consequence is gradual fastener backing out, which can cause component misalignment or detachment. Keeping a locknut in sound condition helps maintain clamp load in dynamic applications. This aftermarket replacement part references JLG catalog number JL88521306. Verify the serial number or application, then call (562) 693-7748. The item ships at approximately 0.1 pounds.

Part number variants: JL88521306, jl88521306