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 6620-01-301-3258
NSN 5996-00-153-3216
NSN 5835-01-502-9228
NSN 5935-00-900-1239
NSN 5950-01-024-1953
NSN 6220-00-225-8345
NSN 5990-01-387-6114
NSN 5999-01-298-2594
NSN 5835-01-485-1408
NSN 6610-00-912-6374
NSN 4140-00-597-5260
NSN 5915-01-226-4300