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 5945-00-197-7673
NSN 5960-01-641-5493
NSN 4140-01-269-3001
NSN 6610-01-492-2630
NSN 2925-01-068-3844
NSN 6320-01-115-4404
NSN 5975-00-912-4785
NSN 5895-00-807-6558
NSN 5920-01-128-3572
NSN 5935-00-753-0332
NSN 6135-01-202-8113
NSN 4140-00-542-4611