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 4140-01-400-3610
NSN 6105-00-916-3286
NSN 6645-01-409-2003
NSN 6130-00-570-8451
NSN 5975-00-361-7793
NSN 5915-00-171-1812
NSN 5905-01-620-5687
NSN 5935-01-157-5284
NSN 5990-01-024-9659
NSN 7035-01-099-2311
NSN 5925-01-386-3178
NSN 6220-01-091-9103