9/16 Medium Split Lock Washer Black Oxide WDOC and a hexagonal head that

and a hexagonal head that provides a secure grip for tightening and loosening

The black oxide and oil finish offers excellent corrosion resistance

creating a friction fit that helps to keep it in place

Its 5/16-18 thread size ensures a secure fit in compatible materials

It is designed to be used with 10-32 machine screws and has a 3/8" outside diameter and a 1/8" thickness

9/16 Medium Split Lock Washer Black Oxide WDOC and a hexagonal head that9 16" Medium Split Lock Washer, Black Oxide. This lock washer is designed to prevent nuts and bolts from loosening due to vibration or other factors. It is made of durable steel and has a black oxide finish for corrosion resistance. The split design allows for easy installation and removal. This lock washer is ideal for use in a variety of applications, including automotive, construction, and manufacturing.