The material must be solution annealed at 2200 degrees f for 20 minutes in a vacuum or hydrogen atmosphere, the cooling rate must be equivalent to rapid air cool. The sleeve corners are rounded at a radius of 0.011 to 0.014 in.
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: Cobalt, wrought, and articles thereof
NSN 6145-00-465-1641
NSN 6130-01-258-5642
NSN 5895-01-516-5363
NSN 6105-01-516-9936
NSN 5855-00-149-0766
NSN 7035-00-421-8710
NSN 5965-00-891-2778
NSN 6610-01-633-8931
NSN 5990-01-378-7349
NSN 5925-01-150-4559
NSN 5935-01-312-5783
NSN 5998-01-169-6221