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 5920-00-969-2350
NSN 5935-01-089-5151
NSN 6320-01-631-7828
NSN 5855-01-335-8907
NSN 6240-01-063-7685
NSN 5855-00-466-2309
NSN 5930-01-459-7900
NSN 5990-00-177-2924
NSN 5915-01-381-4192
NSN 5905-01-580-6516
NSN 6685-01-016-9032
NSN 6110-01-432-1344