Get dependable fastening with 5/16-18 18-8 Stainless Steel Nylon Insert Hex Lock Nuts (Qty 50). These coarse-thread lock nuts are made from corrosion-resistant 18-8 stainless steel and feature a nylon insert to prevent loosening due to vibration—ideal for automotive, marine, and industrial applications.

✔ 5/16"-18 UNC coarse thread for general-purpose use
✔ Made from 18-8 stainless steel for rust and corrosion resistance
✔ Nylon insert helps resist vibration and maintain a secure hold
✔ Perfect for restorations, custom builds, and repairs

Terms of Service:
✓ 60-day money back guarantee
✓ Free return shipping

Motto:
We won't screw you, but our fasteners will!

Reliable, durable, and built to last—grab a 50-pack of stainless lock nuts today.