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 5920-01-477-8400
NSN 5990-01-483-7313
NSN 6145-01-072-3352
NSN 6150-01-611-7984
NSN 5975-01-618-6090
NSN 5975-01-347-8956
NSN 6650-01-243-3308
NSN 6220-01-549-8454
NSN 6105-00-516-2151
NSN 6320-01-522-0318
NSN 6650-01-112-0453
NSN 5990-01-218-5160