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 5930-00-116-8211
NSN 5985-01-401-5387
NSN 5915-01-398-9831
NSN 6150-01-511-2234
NSN 5835-01-602-0311
NSN 6650-01-563-8117
NSN 5950-01-112-2358
NSN 6650-01-539-6634
NSN 6130-01-167-8036
NSN 5996-01-100-3731
NSN 2925-01-399-2765
NSN 6135-00-235-1938