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 6220-01-054-4926
NSN 5990-01-629-4694
NSN 6620-00-695-2289
NSN 5999-01-022-0776
NSN 5910-01-320-8622
NSN 5915-01-044-5260
NSN 5935-00-434-6018
NSN 5998-01-039-6529
NSN 6130-00-721-4156
NSN 6650-00-356-8405
NSN 6130-01-652-6056
NSN 5945-01-077-6246