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 6650-00-829-9745
NSN 6135-00-840-6451
NSN 6320-01-317-3663
NSN 6130-01-388-3506
NSN 6620-01-152-0936
NSN 5855-01-566-6869
NSN 5925-00-069-5343
NSN 5960-01-350-4288
NSN 6110-01-156-4635
NSN 5895-01-122-7620
NSN 6110-01-529-5244
NSN 5999-01-080-9749