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 5905-01-628-0111
NSN 6610-01-178-0333
NSN 4140-01-115-7377
NSN 5905-01-438-9225
NSN 5905-00-034-5191
NSN 6105-00-448-0399
NSN 6150-01-555-1361
NSN 5998-00-542-4889
NSN 5835-01-552-8365
NSN 5835-00-240-9838
NSN 5935-00-817-6275
NSN 5910-01-630-5595