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 6110-00-141-1966
NSN 5960-00-822-9519
NSN 5915-00-361-1136
NSN 5998-01-585-4029
NSN 4140-01-475-3615
NSN 6685-00-553-8733
NSN 6240-00-161-8099
NSN 5910-01-549-6962
NSN 6145-01-199-8679
NSN 5975-00-207-1502
NSN 7035-00-059-7970
NSN 6220-00-419-3633