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 5905-00-420-4251
NSN 7035-01-337-8128
NSN 5935-01-032-8614
NSN 5935-01-386-4183
NSN 5945-00-189-0767
NSN 6110-00-244-0427
NSN 5915-01-207-4500
NSN 5975-01-462-8569
NSN 6150-01-442-4997
NSN 5895-01-358-4452
NSN 6135-00-351-8606
NSN 5945-01-542-8211