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 5998-01-419-8880
NSN 6145-01-483-1905
NSN 6130-01-523-0329
NSN 5855-01-417-3250
NSN 5915-01-461-8233
NSN 5935-01-346-6190
NSN 2925-01-216-4757
NSN 6610-01-433-1345
NSN 6645-01-598-8118
NSN 5999-01-495-0468
NSN 6685-00-906-4720
NSN 5915-01-472-8977