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 5930-01-090-6756
NSN 5930-01-014-3643
NSN 6650-01-250-8701
NSN 5975-01-236-7589
NSN 5915-01-623-4502
NSN 5835-00-523-0736
NSN 5855-00-337-3679
NSN 6620-00-224-3479
NSN 5905-00-083-6394
NSN 6220-01-290-4739
NSN 5925-01-120-3837
NSN 5999-00-866-1112