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 5915-01-571-3925
NSN 5855-01-341-7320
NSN 5985-00-545-7191
NSN 5920-00-803-3290
NSN 6145-01-502-3891
NSN 6650-01-503-9139
NSN 7035-01-103-6845
NSN 6610-01-200-6861
NSN 6110-00-045-4225
NSN 5999-01-369-5155
NSN 6685-01-422-9927
NSN 6145-01-275-5924