2nd step, 1st end, threaded, no. 5-44 nf 2a thread
No other part numbers with same form, fit, and function found.
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 5999-01-406-3489
NSN 6645-00-589-0143
NSN 5998-00-898-2297
NSN 6145-00-538-9067
NSN 5999-00-417-0485
NSN 5855-01-031-4729
NSN 6150-00-698-2119
NSN 5915-00-312-8011
NSN 5998-01-418-2378
NSN 5996-00-504-8074
NSN 5975-00-448-3179
NSN 5960-00-797-2280