This nylon insert lock nut is a 3/8-16 zinc-plated fastener designed to resist loosening from vibration. The internal nylon collar provides friction against the bolt threads, preventing accidental unscrewing. This specific type is often chosen for applications where a secure, vibration-resistant connection is necessary, and regular tightening is impractical or undesirable.
Commonly applied in machinery assembly, vehicle maintenance, and equipment installations where consistent torque is critical. The zinc plating offers basic corrosion resistance, suitable for dry or indoor environments. The nylon insert maintains its locking action through repeated stress cycles.
Specifications
- Material / grade: Carbon steel with nylon insert
- Size: 3/8-16
- Finish: Zinc plated
- Pack quantity: 250
- Thread type: Coarse
In stock. Ships same day on orders placed before 3:00 pm CT. 30-day returns on unused stock
in original packaging.





