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 5960-01-407-1350
NSN 5990-01-472-2447
NSN 6135-01-210-8715
NSN 5915-01-544-6552
NSN 5910-00-712-4501
NSN 6110-01-645-4807
NSN 6220-00-358-9580
NSN 5945-01-579-5442
NSN 6320-01-067-0474
NSN 5935-01-326-1683
NSN 6145-01-450-5960
NSN 6620-01-386-5914