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: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 6220-01-634-0660
NSN 2925-00-735-4979
NSN 6220-01-057-0532
NSN 5925-00-126-6660
NSN 5925-00-483-4276
NSN 5920-01-520-4447
NSN 6645-00-012-4866
NSN 5999-01-633-0204
NSN 6135-01-426-8282
NSN 5920-01-045-1484
NSN 5985-00-597-2966
NSN 6685-00-193-0201