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 6150-00-765-4294
NSN 6135-00-950-9380
NSN 7035-01-618-1438
NSN 5935-01-025-9168
NSN 5920-01-336-1730
NSN 6610-01-212-9817
NSN 5998-01-272-3864
NSN 5985-00-070-5722
NSN 5935-01-395-2045
NSN 5985-01-627-8307
NSN 6610-01-194-1778
NSN 6240-01-094-4452