5/16-18 Grade 8 Nylon Insert Lock Nuts – Zinc Yellow – Coarse Thread (Pick Quantity)

Hey mechanics and builders!

Need some serious locking power?

These 5/16-18 Grade 8 nylon insert lock nuts are exactly what you’re looking for.

They’re made from strong steel with a zinc yellow finish that resists corrosion.

The nylon insert keeps them from backing out, even under vibration.

Coarse thread, external hex drive, and built to Grade 8 specs—tough stuff.

Perfect for automotive, machinery, or any project where you can’t afford loosening.

Pick your quantity and stock up.

Unbranded, but built to perform.

Keep things tight and right with these lock nuts!