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 5930-00-084-7579
NSN 6145-00-607-3266
NSN 7035-01-622-4817
NSN 5915-00-005-4263
NSN 6320-00-809-5744
NSN 5996-00-779-0835
NSN 6135-01-205-5965
NSN 5998-01-331-9903
NSN 5990-01-097-4721
NSN 2925-00-730-0416
NSN 5920-00-062-5995
NSN 6220-01-146-5152