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 5999-00-223-7147
NSN 6130-01-431-8222
NSN 5985-00-031-3641
NSN 6130-01-273-4287
NSN 2925-01-252-8049
NSN 6145-01-633-2367
NSN 5998-00-529-8635
NSN 6220-00-291-3722
NSN 6135-01-643-5809
NSN 5915-01-484-3738
NSN 6320-01-078-8257
NSN 6130-00-471-3210