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 5965-01-256-9460
NSN 5985-01-354-0323
NSN 5920-01-183-7938
NSN 5910-01-279-9694
NSN 2925-01-578-7731
NSN 6645-01-116-2037
NSN 5990-01-310-5630
NSN 6645-00-526-6730
NSN 5835-00-936-8753
NSN 5999-01-634-0576
NSN 5920-01-616-0574
NSN 5999-00-192-4681