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 5835-01-411-7050
NSN 6650-01-273-9775
NSN 5950-01-592-3145
NSN 5935-01-135-2440
NSN 5999-00-156-4424
NSN 5950-00-189-9177
NSN 5998-00-509-0291
NSN 5998-01-473-7724
NSN 5975-00-705-7667
NSN 6150-01-350-3713
NSN 5920-01-354-5559
NSN 5985-01-468-6075