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 5965-01-019-0939
NSN 5915-00-023-5154
NSN 5975-00-226-8429
NSN 5930-01-094-5928
NSN 5895-01-419-6991
NSN 6110-00-188-9874
NSN 5990-00-020-1048
NSN 6130-00-352-2317
NSN 6150-01-386-9008
NSN 4140-01-379-6261
NSN 2925-00-452-6403
NSN 6650-00-045-4362