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 5925-01-264-5080
NSN 6150-01-430-0332
NSN 5835-01-446-6065
NSN 5990-01-025-7466
NSN 6110-01-524-6253
NSN 6220-01-322-5660
NSN 5996-01-385-0884
NSN 4140-01-030-5769
NSN 5910-00-226-1123
NSN 6135-01-101-5039
NSN 5945-00-876-1143
NSN 6645-00-674-1594