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 6610-01-074-0419
NSN 5910-00-959-7591
NSN 5895-01-592-7443
NSN 6105-01-013-9252
NSN 7035-01-024-1771
NSN 6110-01-478-4909
NSN 6645-01-079-1262
NSN 2925-01-063-7876
NSN 5855-01-634-0259
NSN 5998-00-855-6004
NSN 5996-01-287-0656
NSN 5915-01-444-4069