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 5996-01-142-9639
NSN 5998-01-176-3839
NSN 6220-01-634-0660
NSN 7035-01-106-3476
NSN 5975-00-267-2776
NSN 6685-01-046-2803
NSN 6650-01-144-5351
NSN 5985-00-067-7251
NSN 6135-00-935-8769
NSN 5975-01-038-0596
NSN 5999-00-092-7825
NSN 5855-00-411-8688