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 6685-01-376-4735
NSN 5915-01-462-9178
NSN 5950-01-297-0829
NSN 6220-01-448-5438
NSN 6320-01-454-1965
NSN 6320-00-994-0179
NSN 5985-01-413-7772
NSN 6110-00-353-0139
NSN 5945-01-444-4293
NSN 5965-01-335-2245
NSN 6320-01-129-9656
NSN 5998-01-038-5752