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 6645-01-159-5173
NSN 6130-01-342-6998
NSN 5990-01-303-9920
NSN 6650-01-013-9334
NSN 5905-00-736-4242
NSN 6645-00-857-0410
NSN 6645-01-436-9702
NSN 6135-01-090-5365
NSN 6620-01-651-5425
NSN 5915-01-426-8862
NSN 5945-00-910-3789
NSN 5935-01-312-7564