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 6135-01-502-5787
NSN 5990-01-561-7802
NSN 5835-01-626-9603
NSN 2925-01-172-0176
NSN 5965-01-080-4021
NSN 5915-01-304-6828
NSN 5920-01-330-8789
NSN 5945-00-446-9290
NSN 5930-00-341-7664
NSN 5998-00-420-1448
NSN 5930-01-074-8223
NSN 5935-01-075-8985