Description
Vibration and thermal cycling will loosen standard fasteners on race engines and high-performance builds—leaving you stranded or risking catastrophic failure. Fast-Trac stainless steel locknuts with nylon inserts provide positive locking that holds under extreme conditions, eliminating the need for constant re-torquing. Whether you’re securing suspension components, engine bay hardware, or exhaust systems, these low-profile locknuts deliver the reliability required for both track and street applications.
- Thread Size: 5/16-24
- Material: Stainless Steel
- Locking Feature: Nylon Insert
- Design: Low-profile
- Quantity: 250 Pack
- Corrosion Resistance: Excellent
- Installation: Bolt-on compatible
- Applications: Universal
- Temperature Stable: Yes









