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 5998-01-534-9984
NSN 5996-00-553-7348
NSN 6110-00-553-1853
NSN 5935-01-088-6984
NSN 4140-00-908-2763
NSN 5996-00-958-7965
NSN 5920-01-464-3855
NSN 5945-01-105-0552
NSN 6220-01-631-7916
NSN 5975-01-269-0283
NSN 5835-01-544-5183
NSN 6320-00-270-8222