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 5960-01-493-3948
NSN 6645-00-596-5388
NSN 4140-01-029-4211
NSN 6650-00-486-7924
NSN 4140-00-189-0235
NSN 6620-01-081-1042
NSN 5910-01-350-3639
NSN 5935-01-118-4372
NSN 5895-00-825-9240
NSN 5930-00-291-5400
NSN 6645-01-614-4838
NSN 5855-01-312-5160