7/8″ inch (24mm ID x 45mm OD) Stainless Steel Flat Washer, 304 Stainless Stee…
No exterior finish and no coating, the screws are made of the finest 304 stainless steel 18-8. Washer Type: Flat. Flat washers help distribute the pressure from the nut and the bolts head as well as reduce the chance of nut loosening from an uneven surface.