#8 x 3/8 x .032 Flat Washer Nylon is a thin, round, flat washer made of nylon. It has an outer diameter of 3/8 inches, an inner diameter of #8 inches, and a thickness of .032 inches. Flat washers are used to distribute the load of a screw or bolt over a wider area, preventing damage to the material being fastened. Nylon washers are lightweight, durable, and resistant to corrosion, making them suitable for use in a variety of applications.