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 5920-01-332-6414
NSN 5935-00-477-1280
NSN 5998-01-024-5435
NSN 6645-00-780-5260
NSN 5905-00-752-0099
NSN 6620-01-184-9210
NSN 5915-01-253-7546
NSN 5935-00-378-9285
NSN 6645-00-557-0322
NSN 6240-01-327-2449
NSN 6150-00-461-5939
NSN 6220-00-445-9284