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 5999-00-189-0032
NSN 6220-01-080-2783
NSN 5915-01-469-7568
NSN 5935-00-580-1724
NSN 5975-01-131-2239
NSN 6320-01-145-9013
NSN 6150-01-441-3626
NSN 5960-00-087-6636
NSN 6105-01-375-9058
NSN 5920-01-231-9175
NSN 5998-01-152-1985
NSN 5975-01-357-4238