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 6320-00-857-4073
NSN 5999-01-064-1333
NSN 5895-01-651-2896
NSN 4140-01-490-7747
NSN 5999-01-326-7072
NSN 6150-01-503-1771
NSN 4140-01-032-3705
NSN 6145-00-635-7920
NSN 6320-01-056-1164
NSN 6150-01-224-8858
NSN 6110-01-142-2426
NSN 6320-01-067-0474