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 5985-01-122-5381
NSN 5910-01-592-3861
NSN 5999-01-401-5322
NSN 5935-01-589-9325
NSN 5999-01-323-7113
NSN 5975-01-284-3422
NSN 6220-01-514-4591
NSN 5999-01-644-9029
NSN 5975-01-416-8453
NSN 5930-00-822-5606
NSN 6135-01-161-3914
NSN 5910-01-048-0537