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 7035-00-413-0992
NSN 7035-00-834-2090
NSN 6650-00-299-9681
NSN 5930-01-385-1983
NSN 6240-01-025-4495
NSN 6105-01-481-4042
NSN 5935-00-985-5448
NSN 2925-01-422-1542
NSN 5935-01-461-8096
NSN 5835-01-447-2544
NSN 6135-01-255-4786
NSN 5935-01-296-5582