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 5945-01-121-6047
NSN 5965-01-273-3055
NSN 5975-01-060-4903
NSN 6130-00-740-3884
NSN 5905-00-307-4358
NSN 6645-01-534-3148
NSN 5950-01-260-1328
NSN 5950-00-951-1520
NSN 5910-01-339-2310
NSN 5985-00-597-2966
NSN 5935-01-546-6221
NSN 5985-01-106-3644