Parts list calls item counter shaft
No other part numbers with same form, fit, and function found.
A straight shaft having two or more of the following conditions: a specified surface finish designation in the range of 1 to 125 microinches (o.O25 to 3.2 micrometers), arithmetical average (aa), machined peripheral flat(s), circular groove (s), keyway(s), splines, threads, or holes. It is not designed for use in aligning by fitting into corresponding holes of another item. It may be drilled for lubricating holes. For items having an integral gear(s) or worm(s), see gearshaft (as modified). For items designed to support rotating members see axle(1), straight. For items not having the above conditions see pin, straight, headless. For items having machined ends which constitute steps see shaft(1), shouldered; axle(1), shouldered; and bolt, fluid passage.
Classification: Transmission shafts and cranks, except camshafts and crankshafts
NSN 5895-00-252-5953
NSN 6145-01-481-4195
NSN 5930-00-912-9130
NSN 6620-01-491-7001
NSN 5835-01-319-4636
NSN 6240-01-469-8823
NSN 6610-01-502-5952
NSN 6620-01-198-9448
NSN 4140-00-547-8918
NSN 5895-01-364-4172
NSN 6240-01-009-0363
NSN 6135-01-479-9783