Premium M3 X 0.5mm Hex Lock Nuts Built Like A Tank With Nylon Insert For Rock Solid Self Clinching Grip Black Zinc Plated Carbon Steel Fastener Assortment Pack Of 100 For Pro Shop And Garage Work

M3 Hex Lock Nuts with Nylon Insert for Secure Bolt Retention
✔️ 0.5mm pitch, 0.02 inch gap, 5.5mm flat, 0.22 inch width, 4mm thick

This pack of hundred black fasteners uses a polymer collar to trap bolts against shock.

✅ Nylon lined ring stops rotation under heavy torque loads
✅ Zinc coated body blocks moisture damage in damp shops
✅ Flat profile fits tight spaces on machinery rails
✅ Ready to bolt onto matching threads without extras

💡 What makes nylon collar hex nuts safer for keeping bolts on heavy gear?

- These locked thread profiles stop accidental movement before it starts. - You can cycle these fasteners dozens of times without losing grip strength. - The hardened carbon core takes pounding road shakes and motor rumble easily. - Handy swap for standard washers when bolting down rack frames or tool stands. ✝️