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 6620-01-486-9040
NSN 6130-01-052-8470
NSN 5925-01-515-1378
NSN 5996-01-199-1200
NSN 5999-00-451-0530
NSN 6240-01-163-6606
NSN 6110-01-452-9388
NSN 5925-01-392-0881
NSN 6650-01-196-4667
NSN 5855-01-330-3669
NSN 6645-00-183-8812
NSN 5945-01-499-1318