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 6320-00-228-5678
NSN 6320-01-465-2028
NSN 5835-00-111-3419
NSN 5975-00-647-4968
NSN 5910-01-646-1249
NSN 5905-00-216-8671
NSN 5915-01-342-8972
NSN 5975-01-339-0101
NSN 5895-00-270-0949
NSN 5920-01-068-0178
NSN 6650-01-158-6888
NSN 5925-01-480-6089