Everbilt 3/8 in. Serrated Zinc Lock Nut (2 per Bag)

The 3/8-16 Zinc-Plated Steel Serrated Lock Nuts (2 per Pack) are made from durable zinc-plated steel. These lock nuts are used for fastening to bolts (bolts not included) and feature a washer-like surface with teeth to help prevent loosening during vibration.