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 6240-01-375-3571
NSN 5930-01-038-9676
NSN 5945-01-621-8148
NSN 5930-01-396-1189
NSN 5835-00-752-6065
NSN 5915-01-088-0816
NSN 5915-00-398-0677
NSN 7035-01-371-0091
NSN 6650-01-251-0584
NSN 5835-01-514-5758
NSN 5998-00-064-4595
NSN 6650-00-023-5054