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 5910-01-099-3645
NSN 6240-00-518-2400
NSN 5965-00-815-2525
NSN 5855-01-433-7009
NSN 5925-01-125-5795
NSN 6645-00-222-2785
NSN 6135-00-643-4843
NSN 5835-00-170-5238
NSN 5999-01-185-5380
NSN 5990-01-581-6871
NSN 6620-01-169-9470
NSN 5945-01-123-9879