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 5895-00-927-9909
NSN 4140-01-094-3584
NSN 5990-01-386-3040
NSN 5950-01-415-0276
NSN 6105-00-824-4118
NSN 6145-01-558-1889
NSN 6620-01-200-6493
NSN 4140-00-823-9194
NSN 5920-01-398-7123
NSN 6145-00-787-7313
NSN 5999-01-150-9432
NSN 6650-01-036-1212