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 5960-01-609-6565
NSN 6130-00-213-3171
NSN 5950-00-195-1008
NSN 6620-00-335-7437
NSN 5998-01-112-1181
NSN 7035-01-352-0766
NSN 6240-01-480-5897
NSN 5855-01-459-9254
NSN 5855-00-821-7512
NSN 6145-00-985-3284
NSN 5905-01-444-2037
NSN 6610-01-444-1490