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 5910-01-066-3028
NSN 5999-01-602-9145
NSN 5895-00-916-0893
NSN 6620-00-153-0982
NSN 5996-00-636-4849
NSN 5998-01-399-1957
NSN 5960-01-111-5142
NSN 5945-00-318-3542
NSN 6150-01-162-5417
NSN 5960-01-593-4760
NSN 5915-01-305-5327
NSN 6110-01-082-2968