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 6135-01-290-1594
NSN 6620-01-216-0904
NSN 6240-01-592-3176
NSN 5835-01-125-6676
NSN 6240-01-522-0875
NSN 5935-01-027-3695
NSN 6240-01-304-6355
NSN 5905-01-463-4536
NSN 5855-01-510-4564
NSN 6240-01-265-6958
NSN 5935-01-151-8020
NSN 5999-01-359-3255