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 5905-00-284-3201
NSN 6645-01-290-1013
NSN 5905-00-624-1431
NSN 5999-01-230-4542
NSN 5905-01-577-4373
NSN 6650-00-987-5070
NSN 5985-00-985-6159
NSN 5999-01-413-5828
NSN 5975-00-391-6357
NSN 5985-01-272-9745
NSN 6105-01-616-9020
NSN 5835-01-071-2814