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.
NSN 6685-01-133-1955
NSN 6150-01-437-5443
NSN 2925-00-155-2100
NSN 5925-01-537-9049
NSN 6620-01-146-6968
NSN 5855-01-437-6161
NSN 5965-00-958-7455
NSN 5835-01-519-2916
NSN 6320-01-659-2819
NSN 5915-01-467-7595
NSN 5985-00-938-9025
NSN 6130-01-252-0122