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 5945-00-398-1072
NSN 5930-00-357-6096
NSN 6320-00-674-1361
NSN 4140-01-521-4577
NSN 5935-01-501-6273
NSN 5835-00-568-2956
NSN 5960-01-098-1170
NSN 5945-00-963-1635
NSN 6145-01-107-3275
NSN 5945-01-660-0718
NSN 5965-01-476-0721
NSN 5945-00-912-8787