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 5998-01-142-7726
NSN 5998-01-418-1601
NSN 5965-01-521-3224
NSN 5895-01-210-9191
NSN 5960-01-522-0391
NSN 5960-00-405-1284
NSN 6650-01-382-8569
NSN 5855-01-300-0983
NSN 6150-01-443-4305
NSN 5998-01-504-6047
NSN 5905-01-068-4582
NSN 6620-01-067-0536