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 6135-00-412-1687
NSN 5996-01-276-9420
NSN 6135-00-284-1406
NSN 5930-00-040-1643
NSN 5920-01-574-9208
NSN 5935-01-489-1917
NSN 2925-00-435-2992
NSN 5950-01-541-3737
NSN 6145-00-398-4405
NSN 5945-01-310-4610
NSN 5996-00-795-7001
NSN 5915-01-436-7534