Color yellow federal standard 595 no. 23538
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 overall length must exceed 25 percent of the outside diameter or distance across peripheral flats of the body. (when the length, outside diameter, and/or distance across peripheral flats are designed as a tolerance, the maximum dimension will be used to determine compliance). For items having other than a round or hexagon peripheral shape, see spacer, plate. Excludes items with lubricating features, see bearing, sleeve and bushing, sleeve. See also bushing, tapered; spacer, ring; washer, flat; and washer, (as modified).
Classification: Other articles of iron or steel not wire nesoi
NSN 6240-01-442-7746
NSN 7035-00-929-0363
NSN 5945-01-310-2819
NSN 5930-00-015-1255
NSN 5915-01-048-3671
NSN 6130-01-051-1405
NSN 6145-01-507-3868
NSN 6150-01-165-7822
NSN 5996-00-133-3538
NSN 5835-01-647-6426
NSN 6610-01-399-1295
NSN 6650-00-492-9503