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 2925-01-097-0903
NSN 6105-01-025-5981
NSN 5999-01-188-7225
NSN 5945-01-239-8190
NSN 6645-01-169-2798
NSN 6320-01-506-9439
NSN 6685-00-534-3036
NSN 6110-01-089-6260
NSN 5998-01-376-7696
NSN 5935-01-192-1890
NSN 6150-01-219-4938
NSN 5960-01-076-4708