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 7035-01-406-5232
NSN 5835-01-016-8461
NSN 5930-00-818-8339
NSN 6135-00-951-3426
NSN 4140-01-562-7348
NSN 5910-01-618-3729
NSN 6650-01-476-3329
NSN 6145-00-019-0047
NSN 6610-00-125-9872
NSN 6620-00-533-0536
NSN 5930-01-327-3007
NSN 5945-01-047-3066