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 6105-01-189-8822
NSN 5990-00-140-1159
NSN 6240-01-392-5991
NSN 4140-00-090-6536
NSN 5935-01-065-2949
NSN 5999-01-486-9284
NSN 5835-01-005-2836
NSN 5915-01-329-3669
NSN 6110-01-472-3069
NSN 6620-00-932-1207
NSN 5855-00-256-5562
NSN 5950-01-393-2283