5/16 Machine Screw Washer Zinc 6 round piece of metal with

round piece of metal with a hole in the center

It has a 1/4-inch inner diameter and a 1-inch outer diameter

and zinc plated

The nut has a hex shape

This 1 1/4-7 x 6 Square Head Machine Bolt Plain is a high-quality fastener designed for use in various industrial and construction applications

5/16 Machine Screw Washer Zinc 6 round piece of metal withThis 5 16" Machine Screw Washer is made of zinc plated steel and is designed to be used with 5 16" machine screws. It is a flat washer with a 1 2" outside diameter and a 5 16" inside diameter. The washer helps to distribute the load of the screw and prevent it from damaging the surface of the material being fastened. It is also used to prevent the screw from loosening due to vibration or movement. This washer is zinc plated for corrosion resistance