Shaft helm main shaft helm unit
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 5915-01-449-0859
NSN 6145-01-194-6505
NSN 5925-01-477-1673
NSN 5975-01-441-2181
NSN 5950-00-248-6921
NSN 5965-00-932-4591
NSN 6145-01-235-3263
NSN 6320-01-570-8814
NSN 6145-00-891-6779
NSN 6320-00-450-7014
NSN 6620-01-649-0748
NSN 5835-00-838-0707