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 6105-01-372-9157
NSN 6240-00-669-6652
NSN 6135-01-029-9315
NSN 5935-01-661-3820
NSN 4140-00-053-9499
NSN 5905-00-218-1237
NSN 5965-01-040-4178
NSN 5905-01-195-3591
NSN 5835-00-698-9824
NSN 6110-01-613-0036
NSN 6320-00-546-9249
NSN 6645-01-411-2283