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 6320-01-322-8340
NSN 5910-01-098-3158
NSN 2925-00-805-6481
NSN 5925-00-325-4424
NSN 5905-01-319-0371
NSN 5985-01-281-7333
NSN 7035-01-476-4085
NSN 5930-01-014-1496
NSN 4140-00-289-9263
NSN 6610-00-205-7352
NSN 6220-00-136-7749
NSN 5935-00-003-1629