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 6645-01-124-6277
NSN 6610-01-496-9860
NSN 2925-00-724-9252
NSN 5998-00-255-9921
NSN 2925-01-424-0235
NSN 6220-01-413-3030
NSN 5960-01-546-2379
NSN 6650-01-449-1413
NSN 7035-01-548-1864
NSN 5915-00-901-2011
NSN 5930-00-693-5811
NSN 5915-00-868-3301