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 5920-00-401-0217
NSN 5965-00-208-4896
NSN 6135-00-932-3136
NSN 6650-01-380-9424
NSN 6110-00-140-1688
NSN 6110-01-226-8139
NSN 6135-00-628-1142
NSN 6135-01-425-7434
NSN 6650-01-263-3530
NSN 6135-01-413-4747
NSN 5975-01-358-1392
NSN 5965-00-020-1951