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 6685-01-150-4796
NSN 6135-01-380-0059
NSN 4140-01-513-1914
NSN 6110-01-535-5424
NSN 5965-01-237-3342
NSN 5975-00-806-2113
NSN 5950-01-152-1936
NSN 6240-00-950-1727
NSN 5930-00-168-9218
NSN 5915-01-139-5441
NSN 5998-01-371-7929
NSN 5895-01-442-3466