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 5996-01-322-4838
NSN 5905-01-256-6172
NSN 6650-01-384-0529
NSN 5835-01-229-6964
NSN 6220-01-390-7341
NSN 5999-01-339-1325
NSN 2925-00-149-0760
NSN 5960-00-842-5077
NSN 6220-01-057-3654
NSN 5950-01-202-8021
NSN 6110-01-553-2052
NSN 5990-01-612-5323