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 5930-01-449-0039
NSN 6145-01-350-4272
NSN 5905-00-245-2082
NSN 5965-01-587-9765
NSN 2925-01-263-3638
NSN 5975-00-719-9793
NSN 5935-01-443-6690
NSN 7035-01-285-3857
NSN 5905-01-456-4325
NSN 4140-01-528-0725
NSN 5920-01-375-7099
NSN 6620-00-601-3885