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 5950-01-467-9998
NSN 5996-00-156-5967
NSN 5925-01-525-7694
NSN 5965-01-074-7306
NSN 5835-01-492-4318
NSN 6620-01-007-8368
NSN 6320-01-322-1310
NSN 5990-01-591-0701
NSN 5960-00-450-9730
NSN 6135-01-270-8601
NSN 6145-00-148-5748
NSN 5930-01-576-3787