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 Army 
Dept. of the Air Force 
Dept. of the Navy 
Republic of Korea 
Greece 
Turkey Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 6130-01-466-9966
NSN 5996-00-175-7782
NSN 5835-01-036-4951
NSN 5999-01-245-8500
NSN 5925-01-152-1931
NSN 5950-01-419-3429
NSN 6135-01-398-5922
NSN 5975-01-097-4705
NSN 6685-01-035-5614
NSN 6685-01-319-6006
NSN 5930-01-512-1417
NSN 5990-01-443-2931