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: Other articles of iron or steel not wire nesoi
NSN 6620-01-481-1358
NSN 6145-00-581-1629
NSN 5965-01-406-3156
NSN 5920-00-598-0469
NSN 6220-00-346-8944
NSN 5950-00-050-5193
NSN 6150-01-528-5649
NSN 5996-01-253-3486
NSN 6130-01-019-8759
NSN 6110-00-420-1357
NSN 5915-01-589-0171
NSN 5910-01-036-6782