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 6685-01-605-6029
NSN 5998-00-291-9187
NSN 5950-00-778-6170
NSN 6150-01-025-7338
NSN 5895-01-500-1951
NSN 5950-01-065-0491
NSN 6150-01-068-4231
NSN 4140-00-478-6199
NSN 6650-01-263-5412
NSN 6240-00-280-0186
NSN 6105-00-060-5815
NSN 5920-01-463-9238