MIDWEST FASTENER CORP 08214 Nylon Insert Lock Nut hardware

Lock Nut for Vibration Resistance

This MIDWEST FASTENER lock nut resists loosening when vibration or torque acts on a fastener joint. It suits maintenance crews and assemblers who need a reusable locking element without adhesive. The nylon insert grips the bolt threads to maintain clamp load. It is not for buyers who need a prevailing-torque nut rated for extreme temperature cycles.

Steel Grade 8 Threaded Fastener

The nut threads onto a 1"-8 bolt and requires no special tools beyond a standard wrench or socket. Its steel Grade 8 construction handles high tensile loads in structural or automotive assemblies. The yellow finish provides a visual reference during inspection. It does not replace a jam-nut pair where a secondary lock is specified.

Nylon Insert Holds Under Sustained Load

Under continuous vibration the nylon insert deforms elastically to keep friction against the bolt threads. The locking action persists through repeated thermal expansion and contraction cycles. Performance depends on the bolt material and installation torque matching the application. It is not suited for joints that see rapid temperature spikes beyond the insert’s rating.