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 5999-00-306-2075
NSN 6220-00-141-0268
NSN 6220-01-367-0832
NSN 7035-01-054-7988
NSN 6320-00-107-5291
NSN 2925-00-394-2332
NSN 5915-01-360-5247
NSN 5905-01-198-9417
NSN 7035-01-307-5366
NSN 7035-00-946-2642
NSN 5910-01-484-9698
NSN 6645-01-465-3235