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 6130-01-458-5994
NSN 5990-01-517-7848
NSN 6650-01-320-7610
NSN 5935-01-395-7631
NSN 5920-01-099-8998
NSN 5910-00-230-8982
NSN 7035-00-908-4933
NSN 5990-00-477-1362
NSN 5999-01-447-2757
NSN 5935-01-055-6955
NSN 6610-01-141-7014
NSN 6650-00-276-7541