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 2925-01-335-4549
NSN 5950-01-264-8822
NSN 5935-01-252-7862
NSN 6320-01-489-6044
NSN 6240-01-004-9634
NSN 5910-01-092-2107
NSN 5835-00-644-4512
NSN 5910-01-633-9963
NSN 6610-00-144-7036
NSN 5905-01-183-2137
NSN 5895-00-107-0198
NSN 6150-01-534-2816