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 6650-01-007-3802
NSN 6645-01-061-5516
NSN 5905-01-067-8499
NSN 6150-00-268-3659
NSN 6240-01-186-6448
NSN 6105-00-916-5614
NSN 6220-00-276-8681
NSN 2925-01-458-5808
NSN 6110-01-424-0612
NSN 5990-01-100-1840
NSN 5999-00-836-0639
NSN 6220-00-149-0977