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 5960-01-505-2426
NSN 5975-01-474-4400
NSN 5930-01-090-5426
NSN 6650-01-442-5441
NSN 2925-00-442-0974
NSN 5835-00-594-4921
NSN 5996-01-316-9090
NSN 5999-00-241-3788
NSN 5935-01-063-6450
NSN 7035-01-487-6481
NSN 5905-00-833-9034
NSN 5998-01-291-1142