5/16 x 2 1/2 Fender Washer Zinc 4-40-1 The 5/16-inch hole diameter fits

The 5/16-inch hole diameter fits snugly around a 5/16-inch bolt or screw

Secure heavy objects outdoors with the 5/8" x 7" Hex Lag Screw Galvanized Gimlet Point

This 3/8"-24 x 8 Hex Cap Screw is made of durable steel and features a Grade 8 rating

Their heavy hex head provides a secure grip for tightening

With a diameter of 1/2 inch and a length of 1 1/2 inches

5/16 x 2 1/2 Fender Washer Zinc 4-40-1 The 5/16-inch hole diameter fitsThe 5 16 x 2 1 2 Fender Washer Zinc is a flat, round washer with a large outer diameter and a small inner diameter. It is made of zinc plated steel and is designed to be used with 5 16 inch bolts or screws. The washer helps to distribute the load of the bolt or screw over a larger area, preventing the bolt or screw from pulling through the material it is being used with. It also helps to prevent damage to the material from the bolt or screw.