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 5975-01-108-3947
NSN 4140-01-519-8910
NSN 6610-01-067-6591
NSN 6130-01-483-1779
NSN 4140-00-934-8800
NSN 5895-01-191-6716
NSN 5910-01-046-0585
NSN 4140-01-088-5074
NSN 5960-00-817-5088
NSN 5965-01-258-5662
NSN 6110-01-262-5315
NSN 5965-01-275-9246