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 4140-00-640-1228
NSN 6685-00-936-6428
NSN 6105-01-265-0553
NSN 5910-00-949-8001
NSN 6685-01-411-5286
NSN 5998-00-010-8568
NSN 5920-00-245-0250
NSN 6150-01-167-5868
NSN 5985-01-472-9741
NSN 5910-00-018-2911
NSN 5935-01-225-6894
NSN 5945-01-011-9153