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 5855-00-055-1579
NSN 6105-00-758-7759
NSN 5855-01-175-2465
NSN 6240-01-055-9696
NSN 6320-00-937-5625
NSN 5925-01-213-8777
NSN 6685-01-130-9401
NSN 5996-01-409-1860
NSN 6110-01-430-3684
NSN 5855-01-161-8964
NSN 5945-01-337-2385
NSN 5999-01-266-6182