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 6130-00-111-3085
NSN 7035-00-445-9657
NSN 7035-01-123-8723
NSN 6150-01-370-2249
NSN 5930-01-229-9873
NSN 6650-01-422-7106
NSN 5965-01-503-1402
NSN 5999-01-361-7475
NSN 6320-00-823-2015
NSN 6650-00-885-3775
NSN 5920-00-149-0013
NSN 5855-00-118-8762