Underwater life support iaw navsea instruction 10560.2b
A shaft having two or more different diameters (greater than 0.031 inches (0.79 millimeter)) along its length. It must have one or more of the following conditions: a specified surface finish designation in the range 1 to 125 microinches (0.025 to 3.2 micrometers) arithmetical average (aa), machined peripheral flat(s), circular groove(s), keyway(s), splines, threads, or holes. The ends and/or shoulders may be machined to accommodate bearings, couplings, and the like. It is not designed for use in aligning by fitting into corresponding holes of another item. For items used to support rotating members see axle(1), shouldered. For items not having any of the above conditions see pin, shoulder, headless. Excludes shaft(1), straight; and axle(1), straight.
Classification: Transmission shafts and cranks, except camshafts and crankshafts
NSN 5835-01-138-4747
NSN 5975-00-631-3295
NSN 5905-00-900-4141
NSN 6220-01-235-0877
NSN 5975-01-607-0087
NSN 6145-00-489-3574
NSN 6320-00-216-8779
NSN 5945-01-054-3722
NSN 6130-00-541-8468
NSN 5930-00-851-2651
NSN 4140-01-608-2108
NSN 5935-00-134-5747