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 5985-00-483-9724
NSN 6150-01-386-4623
NSN 5960-01-544-1273
NSN 6240-00-201-9011
NSN 6145-00-596-8447
NSN 6620-01-617-3915
NSN 5990-00-883-2354
NSN 5930-00-123-3974
NSN 5925-01-110-7404
NSN 6610-00-526-4394
NSN 6685-01-032-4752
NSN 5855-01-556-0263