Dyed black per 7.2.2 0f mil-std-171
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: Articles of aluminum nesoi
NSN 5915-01-582-5096
NSN 6105-01-150-6751
NSN 5935-00-539-2467
NSN 6105-01-384-2840
NSN 6650-01-605-5805
NSN 6105-00-944-7591
NSN 5910-00-528-9714
NSN 5985-00-021-6452
NSN 5990-01-272-4091
NSN 5935-01-273-4147
NSN 6645-00-004-0510
NSN 5990-01-262-4068