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.
NSN 5996-00-161-4202
NSN 5999-01-290-3925
NSN 5910-01-417-1463
NSN 5855-01-125-9167
NSN 6150-00-372-5979
NSN 5960-01-214-0951
NSN 6105-01-492-5723
NSN 5835-00-523-0736
NSN 5998-00-462-0713
NSN 5996-00-806-1566
NSN 5920-01-611-1962
NSN 6135-00-271-0407