Natural Nylon Flanged Bushing Washer Shoulder Washer - Outside Diameter 12.8 mm | 0.505 in; Base Height 12.7 mm | 0.500 in; Base Outside Diameter 12.8 mm | 0.505 in; Compatible Screw Sizes 3/8

Cylindrical with Flange Shoulder Washer made from Nylon. It is designed to create interference on both the outside diameter of a hexagonal nut and the inside diameter of a bolt. It reduces friction and wear, preventing damage. It is a widely used product in a wide range of applications and industries. Material UL flame rated.