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 6150-00-283-9426
NSN 6620-01-046-3648
NSN 5985-01-116-5586
NSN 5935-01-536-9478
NSN 5945-01-156-6457
NSN 5835-01-038-2402
NSN 5965-01-161-8097
NSN 5950-00-273-4003
NSN 6130-00-734-5354
NSN 7035-01-459-7545
NSN 5975-01-369-8163
NSN 5855-01-031-4729