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 5975-01-358-7916
NSN 6110-01-633-9660
NSN 6240-01-649-1520
NSN 6685-01-634-0611
NSN 6620-00-555-3992
NSN 6650-00-938-9233
NSN 5910-00-050-9123
NSN 5855-00-560-0110
NSN 6220-01-622-7783
NSN 6645-00-079-1430
NSN 6645-01-075-7722
NSN 6110-01-547-5315