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 5950-01-066-4412
NSN 6150-01-385-6225
NSN 5835-01-250-2939
NSN 7035-01-509-1959
NSN 5999-01-192-3193
NSN 5935-01-215-2123
NSN 5895-00-149-1110
NSN 5905-01-349-8861
NSN 6150-01-099-6797
NSN 7035-00-565-9623
NSN 5910-01-029-3396
NSN 5835-01-323-2581