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 5920-01-420-5768
NSN 5920-01-382-5323
NSN 6320-00-731-6134
NSN 5935-01-127-1914
NSN 5965-00-894-0015
NSN 5920-00-594-3124
NSN 5965-00-454-8706
NSN 5985-00-549-9660
NSN 5920-01-208-8794
NSN 6145-01-552-0654
NSN 2925-00-839-6815
NSN 5965-00-351-3575