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 6240-00-635-9953
NSN 5996-00-373-9001
NSN 6220-00-073-7330
NSN 6150-01-551-4232
NSN 6240-01-341-6579
NSN 6620-01-401-5356
NSN 5999-01-063-7272
NSN 6130-01-646-9992
NSN 5835-01-464-7038
NSN 6150-01-215-7951
NSN 5935-01-034-5551
NSN 6220-00-886-4717