Washers. Theyre just good practice. Washers help to isolate nuts from mounting surfaces to prevent damage and increase holding power. With a washer in place, the nut will not tear into the surface to compromise the structure or damage the finish as it is tightened. Great for general hardware and equipment installations and constructed of 304 stainless steel, each stamped washer provides excellent strength and corrosion resistance. Available in commonly used sizes and pre-packaged in quantities to significantly reduce per washer costs, these packs will ensure you have enough for your current project and any unforeseen future projects. Key Features Isolates nut from mounting surface to prevent damage and increase holding power 304 stainless steel construction for strength and corrosion resistance Packaged in convenient quantities Available in commonly used sizes