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 6110-01-344-4533
NSN 5945-01-091-0281
NSN 5998-00-502-9065
NSN 4140-01-583-6829
NSN 5996-00-739-2315
NSN 5930-01-462-2516
NSN 5996-01-435-4121
NSN 6220-01-298-4581
NSN 6240-00-174-1991
NSN 7035-01-568-0144
NSN 6320-01-272-7072
NSN 5905-00-990-9914