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 5999-00-494-5436
NSN 5895-00-157-1332
NSN 6105-01-609-7561
NSN 5935-01-486-0009
NSN 5905-00-177-7833
NSN 6645-00-938-2173
NSN 5935-00-896-7537
NSN 5985-01-270-5133
NSN 5996-01-495-2923
NSN 5996-01-281-7336
NSN 5895-01-171-4583
NSN 6220-01-207-1229