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 6320-01-495-1244
NSN 5950-01-322-4010
NSN 5975-01-049-5781
NSN 5945-00-241-6252
NSN 5990-01-143-2518
NSN 6105-01-437-8875
NSN 6105-01-475-6944
NSN 5950-01-290-3829
NSN 6135-01-462-6040
NSN 5950-00-529-0264
NSN 5945-00-631-7486
NSN 5925-01-374-5211