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 5998-00-161-8608
NSN 5935-01-421-2456
NSN 6620-01-052-2773
NSN 5965-00-034-4249
NSN 6685-00-074-2471
NSN 6145-00-230-2376
NSN 5935-01-044-8820
NSN 6105-01-195-1475
NSN 5998-00-654-5278
NSN 5998-01-547-6142
NSN 6650-01-003-9355
NSN 5998-01-524-5123