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 5996-01-117-0338
NSN 7035-01-359-3915
NSN 5996-01-013-0432
NSN 6135-01-394-4160
NSN 4140-01-334-9043
NSN 5998-00-140-8859
NSN 5990-01-372-6047
NSN 5999-01-605-9160
NSN 6130-00-229-7352
NSN 5930-00-308-0287
NSN 5945-01-006-9941
NSN 6240-00-760-6323