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 6145-00-813-1738
NSN 6150-01-156-9298
NSN 5985-00-458-7901
NSN 5998-01-181-8939
NSN 5975-01-528-7770
NSN 5960-00-726-0580
NSN 5990-00-057-1816
NSN 5965-01-136-7970
NSN 5985-01-502-9169
NSN 2925-01-374-2402
NSN 6685-00-126-5711
NSN 5910-01-208-6340