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 6150-01-451-8674
NSN 5965-01-339-8139
NSN 6110-01-286-1137
NSN 5990-01-287-1682
NSN 6105-00-185-1579
NSN 6145-00-404-7387
NSN 6685-01-526-3457
NSN 5920-00-547-1051
NSN 5950-01-052-5941
NSN 5925-01-218-6427
NSN 5925-01-441-1841
NSN 5915-00-410-1870