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 6220-01-258-2568
NSN 6105-01-646-3832
NSN 5915-00-740-4336
NSN 5996-01-037-1346
NSN 5998-01-534-9984
NSN 5930-01-381-0331
NSN 2925-00-973-9413
NSN 2925-01-440-9912
NSN 6150-00-168-9968
NSN 5925-00-998-2230
NSN 5925-01-105-9835
NSN 5960-01-023-8037