The Hillman Group 300306 5/16-Inch Split Lock Washer Grade 8, 100-Pack

The split lock washer provides a more uniform load distribution

Used in applications with like nuts and bolts of similar diameter as well as screw products

These fasteners resist loosening caused by vibration and corrosion

This split lock washer provides a circular bearing surface with offset split ends which help bite into the mating material to provide a locking feature when tightened beneath a nut. It is round with a hole in the center and can be used where loosening from corrosion or vibration is a concern. Lock washers are commonly used in any application using a bolt where two pieces are being drawn together.
Brand: The Hillman Group, Model: 300306