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 6650-00-958-7408
NSN 5950-01-577-1632
NSN 6620-01-063-6289
NSN 5990-01-056-6413
NSN 5920-01-655-6301
NSN 5996-00-258-4954
NSN 6240-01-418-5021
NSN 5895-01-090-0567
NSN 6220-00-515-0437
NSN 6130-01-209-2070
NSN 6240-01-592-4068
NSN 7035-01-149-7202