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: Hard rubber (for example, ebonite) in all forms, including waste and scrap; articles of hard rubber
NSN 6105-01-609-1144
NSN 5920-01-287-3343
NSN 2925-00-876-1578
NSN 5930-01-104-5295
NSN 5996-00-688-9082
NSN 5985-01-491-9679
NSN 5945-01-555-3075
NSN 5999-01-410-8369
NSN 5965-01-510-3456
NSN 5915-01-229-1239
NSN 5920-01-618-6044
NSN 5990-01-208-1101