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 5835-01-632-6627
NSN 5945-00-273-9481
NSN 5950-01-506-0674
NSN 6320-00-433-2773
NSN 4140-01-499-4677
NSN 7035-01-386-5722
NSN 5930-01-406-2999
NSN 5965-01-005-0341
NSN 6135-01-399-8230
NSN 5965-00-147-3070
NSN 5930-01-194-1874
NSN 5935-00-202-0047