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 5985-00-420-1260
NSN 6620-01-528-1818
NSN 6650-00-272-2271
NSN 5915-01-092-6838
NSN 5965-01-343-3950
NSN 5945-01-486-9592
NSN 5920-01-518-1026
NSN 5920-01-226-7876
NSN 5920-00-811-2667
NSN 5910-01-361-9829
NSN 4140-01-202-5600
NSN 5935-01-564-7790