Finishing or cup washers are used to put a countersunk screw head in a cup shaped holder when the screw isn't being countersunk into the surface underneath. It provides a finished, decorative appearance. They are available in both steel and stainless as well as brass. (The stainless parts also are available with a flange to keep the sharp under-edge from digging into the fabric underneath when used on furniture.)

Before a countersunk (flat or oval head) threaded fastener is driven into a surface, a washer may be placed under the head for greater protection to prevent the fastener head and/or nut from scratching or indenting the surfaces of the fastened parts, which could ultimately loosen the fastener or damage the surface of the part.

Talk to Hardware Everywhere’s knowledgeable customer service team for help choosing the fasteners that match your application. Call us at 1-800-432-8979 or contact us online.