Largest shoulder has 2 each threaded holes through 0.110 inches diameter, no.6-32 nc-3b csk 90 degrees x .16 di (underside)
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 6135-00-593-6831
NSN 6320-00-228-5678
NSN 5925-00-905-5135
NSN 5996-01-418-0677
NSN 6240-01-441-0027
NSN 5965-01-059-4028
NSN 6685-01-145-0270
NSN 6110-01-451-4326
NSN 5990-01-582-5238
NSN 5855-01-594-7809
NSN 5915-01-325-2048
NSN 6620-01-184-9106