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 5998-01-430-3115
NSN 5930-00-868-3121
NSN 5996-01-209-5886
NSN 6620-01-240-3361
NSN 6685-00-083-6602
NSN 5950-01-509-8670
NSN 5965-01-109-2917
NSN 5930-01-268-2971
NSN 5905-00-083-6030
NSN 5950-01-428-5914
NSN 5996-00-144-8091
NSN 5990-01-082-3807