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 5996-01-446-0568
NSN 6240-01-407-5690
NSN 5998-00-317-7215
NSN 6130-01-583-7576
NSN 6620-01-138-8250
NSN 6105-01-611-4382
NSN 5999-01-436-7764
NSN 5835-01-462-5628
NSN 5855-01-100-3272
NSN 6320-01-019-1028
NSN 5965-01-241-0553
NSN 4140-01-173-3960