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 5925-01-585-4174
NSN 2925-00-203-8735
NSN 5950-00-333-1126
NSN 5855-01-085-5354
NSN 6645-01-233-1131
NSN 5925-00-889-4990
NSN 6620-01-651-5425
NSN 5960-01-462-1864
NSN 5975-01-531-9042
NSN 5996-00-518-0460
NSN 5990-00-067-6791
NSN 5950-00-987-7697