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 6650-01-120-2628
NSN 5925-01-551-1265
NSN 2925-01-603-6379
NSN 2925-01-213-2983
NSN 2925-00-008-5485
NSN 5960-01-448-3497
NSN 5925-00-612-7159
NSN 5925-00-216-4480
NSN 5925-01-322-7930
NSN 6145-01-459-1697
NSN 5920-01-632-1403
NSN 5996-01-501-8729