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 7035-01-633-9537
NSN 5998-00-333-7340
NSN 5895-00-418-4639
NSN 5960-01-413-3877
NSN 6620-01-495-7446
NSN 5920-01-355-1432
NSN 5950-00-170-9103
NSN 5998-00-797-5054
NSN 7035-01-510-2777
NSN 6110-01-348-6621
NSN 5895-00-722-1084
NSN 5998-01-195-1414