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 6685-00-352-8278
NSN 2925-01-562-8051
NSN 6685-00-956-6417
NSN 5945-00-936-6048
NSN 6620-01-349-4469
NSN 5998-01-634-0604
NSN 5910-01-287-9681
NSN 6110-00-246-3109
NSN 5915-01-280-9783
NSN 5950-00-911-6047
NSN 6135-00-932-3136
NSN 6620-01-333-4734