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 5985-00-794-6152
NSN 5990-00-277-3763
NSN 6130-01-607-9647
NSN 7035-01-309-2219
NSN 6105-01-064-0269
NSN 5996-00-482-7334
NSN 5998-01-610-7434
NSN 5990-01-057-4191
NSN 6145-01-175-0658
NSN 5996-00-293-4687
NSN 5915-00-810-0164
NSN 6240-01-623-2413