With 2 grooves and shallow slot in center
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 5930-01-267-5368
NSN 6135-00-735-8530
NSN 6320-01-462-3555
NSN 6685-01-378-2948
NSN 6135-01-386-5709
NSN 5960-00-079-8489
NSN 6110-00-829-8060
NSN 6150-00-620-0484
NSN 5905-00-810-0010
NSN 5895-01-440-0600
NSN 5925-01-172-0036
NSN 2925-00-740-7029