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 5935-00-498-3470
NSN 5975-01-270-1077
NSN 5999-01-640-7283
NSN 5999-01-250-6159
NSN 5925-01-183-8337
NSN 5935-01-548-5104
NSN 6685-00-971-2570
NSN 6145-01-058-5479
NSN 5990-01-147-5225
NSN 6320-00-261-9136
NSN 5975-01-468-6034
NSN 6685-01-504-9486