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 6105-00-089-2578
NSN 6240-01-454-5789
NSN 6610-00-454-6635
NSN 6130-01-212-9912
NSN 5965-01-507-0304
NSN 5930-01-430-2510
NSN 2925-01-533-7904
NSN 5835-01-498-9410
NSN 6130-00-935-0378
NSN 5999-01-133-5985
NSN 5965-00-356-3838
NSN 6650-01-166-5025