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.
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 5945-01-007-0366
NSN 5998-01-442-3960
NSN 5999-01-383-0131
NSN 6240-00-702-1814
NSN 5920-01-051-8086
NSN 5975-00-146-7925
NSN 6220-00-682-8292
NSN 5985-01-646-3914
NSN 5965-00-153-5216
NSN 5975-01-188-4695
NSN 7035-00-126-1899
NSN 6105-01-069-2354