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 
Spain 
Republic of Korea 
Greece 
Turkey Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 2925-01-259-0785
NSN 5930-00-809-3578
NSN 6685-01-606-2802
NSN 6240-00-224-1880
NSN 4140-00-269-8545
NSN 6130-00-807-9513
NSN 5985-00-244-1378
NSN 6150-00-019-0974
NSN 5920-00-553-7118
NSN 5965-01-429-0881
NSN 5945-01-222-0506
NSN 6105-00-288-5872