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 6650-01-399-8552
NSN 6685-00-549-9784
NSN 5990-00-316-8872
NSN 5895-00-054-4759
NSN 5965-01-568-8031
NSN 6145-01-448-3910
NSN 6240-01-469-9550
NSN 7035-00-150-2379
NSN 5975-00-878-2279
NSN 5975-00-593-4615
NSN 5930-00-499-8797
NSN 7035-00-834-2090