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 5935-00-896-3547
NSN 6320-00-925-0558
NSN 5920-01-360-2770
NSN 5910-00-659-8612
NSN 5855-01-060-2820
NSN 6620-00-290-6505
NSN 5920-01-251-8746
NSN 6645-00-321-6071
NSN 5999-00-320-8392
NSN 5915-00-728-6229
NSN 5998-00-553-2849
NSN 5999-00-931-0526