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 5855-00-149-0766
NSN 6150-01-632-6426
NSN 5915-00-886-5474
NSN 5998-01-371-1430
NSN 5930-00-218-1031
NSN 5925-01-451-8036
NSN 6150-01-449-1025
NSN 6145-00-115-6355
NSN 4140-00-618-2932
NSN 6620-01-406-3584
NSN 2925-01-327-3069
NSN 5985-01-617-7996