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 5855-01-530-0125
NSN 5960-01-200-4621
NSN 2925-00-371-2285
NSN 5945-00-937-7896
NSN 6620-00-208-5447
NSN 5965-01-258-1988
NSN 5915-00-768-1885
NSN 4140-01-537-1257
NSN 6105-01-444-3849
NSN 5895-00-339-3014
NSN 5910-00-127-1848
NSN 5965-01-416-8138