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 6105-01-174-8398
NSN 6645-01-018-7664
NSN 5910-01-015-1945
NSN 5895-01-434-2438
NSN 5905-00-577-7461
NSN 6645-00-192-1152
NSN 6110-01-612-7652
NSN 5930-01-445-3263
NSN 5925-01-172-9053
NSN 5910-01-298-1983
NSN 6220-01-650-1897
NSN 6645-00-467-6094