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 5915-01-157-8407
NSN 6620-01-598-2271
NSN 5945-01-492-2378
NSN 5915-01-382-9383
NSN 5999-01-025-7298
NSN 5945-00-165-0632
NSN 5935-01-447-4451
NSN 5915-00-110-1661
NSN 6150-00-812-1965
NSN 5950-00-420-7320
NSN 5945-00-597-5722
NSN 5945-01-163-2604