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 5945-01-542-9117
NSN 6620-01-293-6241
NSN 5990-01-414-7618
NSN 5905-01-486-9975
NSN 6650-01-207-0829
NSN 5910-00-376-9768
NSN 6145-00-468-8534
NSN 5999-01-142-8941
NSN 6145-01-337-2133
NSN 5835-01-321-2906
NSN 6135-00-128-1633
NSN 5920-01-391-1269