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 5910-00-991-0524
NSN 6240-01-237-7454
NSN 5945-01-211-5065
NSN 6320-01-462-2295
NSN 5930-01-443-2439
NSN 6620-01-411-5461
NSN 5965-00-289-6280
NSN 5895-01-443-3463
NSN 6685-01-590-0393
NSN 7035-01-165-0234
NSN 2925-01-280-1911
NSN 4140-00-902-6934