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 5960-01-223-1203
NSN 6240-01-397-5683
NSN 6130-01-398-4486
NSN 5965-00-615-7118
NSN 6650-00-641-3556
NSN 7035-01-179-5667
NSN 6620-01-329-3563
NSN 5905-01-167-0070
NSN 5945-01-244-6237
NSN 5925-00-403-6282
NSN 5990-00-800-1924
NSN 5905-00-269-3705