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.
Dept. of the Navy 
Thailand 
Italy 
Turkey Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 5999-01-406-2841
NSN 6620-01-178-4771
NSN 6685-01-214-2573
NSN 5925-00-001-3838
NSN 6105-01-427-2336
NSN 5999-00-336-0248
NSN 6650-01-542-7154
NSN 5999-00-757-8986
NSN 5999-00-059-3522
NSN 5920-01-113-5881
NSN 6240-00-079-1759
NSN 5835-00-594-4921