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 6105-01-634-0322
NSN 5998-01-188-7217
NSN 6320-01-050-1290
NSN 5935-00-726-7610
NSN 5855-00-288-1408
NSN 5960-01-443-3067
NSN 6320-01-643-0850
NSN 6135-00-452-2266
NSN 5855-01-648-7687
NSN 5985-00-831-0202
NSN 5895-01-197-2930
NSN 5985-01-223-6328