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 5925-00-969-8672
NSN 5895-01-350-3527
NSN 5975-01-556-6996
NSN 6220-01-210-4162
NSN 6240-01-508-2848
NSN 5910-00-236-3165
NSN 5945-01-058-1437
NSN 5998-01-246-4065
NSN 5895-01-098-4293
NSN 6145-01-161-9861
NSN 6130-01-278-9204
NSN 5920-01-426-8517