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 5895-01-116-3271
NSN 6135-00-938-1351
NSN 5996-00-140-2514
NSN 6610-01-061-1875
NSN 6105-01-409-2023
NSN 5935-01-406-5236
NSN 5935-00-402-4157
NSN 6135-01-532-7951
NSN 5855-00-407-0726
NSN 5915-01-355-2860
NSN 6685-01-150-4095
NSN 5999-01-078-0507