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 6150-00-876-1686
NSN 5915-00-863-2276
NSN 5920-01-295-3267
NSN 6105-01-027-1135
NSN 6145-01-199-6292
NSN 5945-01-328-8526
NSN 6105-01-381-0411
NSN 5999-01-514-2926
NSN 5905-01-656-6529
NSN 6110-01-474-4280
NSN 6620-01-226-4065
NSN 5895-01-063-8104