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 5920-00-003-2940
NSN 6685-00-679-9965
NSN 5990-00-226-7894
NSN 5895-01-582-3188
NSN 5945-01-269-4582
NSN 6645-00-843-5215
NSN 6685-00-816-8838
NSN 5905-00-625-2421
NSN 6130-01-434-6091
NSN 5920-01-319-6790
NSN 5855-00-862-3345
NSN 5990-01-101-7602