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 6135-01-056-4609
NSN 6105-01-324-7891
NSN 5960-00-951-7284
NSN 5920-01-524-4126
NSN 5945-01-152-6189
NSN 6685-01-246-6065
NSN 5999-00-519-8423
NSN 5935-01-174-1564
NSN 5998-01-419-3945
NSN 4140-00-823-9194
NSN 6685-00-399-3250
NSN 5905-00-929-0555