A tubular shaped item with a round or hexagon peripheral shape having two flat bearing surfaces perpendicular to the axis of the centrally located hole. It is designed to maintain a predetermined distance between assembled parts. The item may be with or without flange(s) of any peripheral shape. The length must exceed 25 percent of the outside diameter or distance across peripheral flats. (when the length, outside diameter, and/or distance across peripheral flats are designated as a tolerance, the maximum dimension will be used to determine compliance.) it must have one or more internal steps (counterbores) and/or external steps on either or both bearing surfaces. Excludes spacer, optical element. See also washer, recessed and washer, shouldered and recessed.
Classification: Articles of aluminum nesoi
NSN 5920-00-099-0826
NSN 5945-00-960-7367
NSN 5999-01-480-0855
NSN 5965-01-249-6349
NSN 5935-01-166-2221
NSN 6650-01-466-9503
NSN 5925-00-062-6604
NSN 5920-00-345-5833
NSN 5910-01-333-8837
NSN 5996-01-107-5737
NSN 5965-00-831-2134
NSN 5945-00-402-9039