A circular-shaped item designed to maintain predetermined distance between assembled parts and/or for distributing pressure or preventing endwise movement between member parts. It has a solid cross-section and two flat parallel bearing surfaces. The distance between the bearing surfaces perpendicular to the axis of the centrally located hole shall not exceed 25 percent of the outside diameter. The diameter of the centrally located hole must exceed 75 percent of the outside diameter. Excludes laminated items. For items manufactured from impregnated graphite or lubricated nonmetallic materials, excluding felt or plastics, see gasket. For items manufactured from lubricated plastics, see bearing, washer, thrust. For items manufactured from lubricated felt, see felt, mechanical, preformed. Excludes disk, valve; insulator washer; and shim. See also spacer, plate and spacer, sleeve.
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 6645-01-435-6373
NSN 6650-01-519-0399
NSN 5835-00-059-5854
NSN 6620-01-059-0876
NSN 5905-01-503-3102
NSN 5905-01-118-5658
NSN 5999-01-012-4065
NSN 6240-00-758-3367
NSN 6105-01-313-8299
NSN 6610-01-010-3159
NSN 6130-00-651-7326
NSN 5930-00-491-4854