Two flats on 2nd end 180 deg
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 6220-00-935-6881
NSN 5975-01-406-2801
NSN 5930-00-452-6365
NSN 5985-01-147-5470
NSN 5895-00-969-1657
NSN 6110-01-461-2631
NSN 5998-01-072-7008
NSN 5999-01-069-3877
NSN 5835-00-147-9328
NSN 6135-01-391-6515
NSN 5950-01-564-3676
NSN 6135-01-050-3194