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 5950-01-089-8465
NSN 5999-01-655-9367
NSN 6130-01-422-0563
NSN 6150-00-195-6992
NSN 5835-01-386-4027
NSN 5920-01-599-8622
NSN 5990-01-024-9659
NSN 5996-01-100-4361
NSN 6145-01-472-6081
NSN 5905-01-252-9097
NSN 5998-00-542-9656
NSN 6240-01-148-0379