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 5905-01-232-8206
NSN 6110-01-090-9906
NSN 6105-01-167-4846
NSN 5999-00-045-3691
NSN 6240-00-541-7032
NSN 5998-01-634-0604
NSN 5945-00-920-4609
NSN 5998-01-425-6354
NSN 5905-00-834-4148
NSN 5990-01-157-0441
NSN 5895-01-003-9424
NSN 6150-00-998-8608