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 6685-00-373-9004
NSN 6320-00-593-0379
NSN 5835-01-416-6455
NSN 5996-01-250-0081
NSN 5895-01-370-7713
NSN 5950-01-183-3478
NSN 5960-01-192-0268
NSN 5930-01-443-3096
NSN 6685-00-626-2419
NSN 5996-00-967-0781
NSN 6650-01-328-8363
NSN 5920-01-358-5970