Straight keyway in middle of shaft
A shaft having two or more different diameters (greater than 0.031 inches (0.79 millimeter)) along its length. It must have one or more of the following conditions: a specified surface finish designation in the range 1 to 125 microinches (0.025 to 3.2 micrometers) arithmetical average (aa), machined peripheral flat(s), circular groove(s), keyway(s), splines, threads, or holes. The ends and/or shoulders may be machined to accommodate bearings, couplings, and the like. It is not designed for use in aligning by fitting into corresponding holes of another item. For items used to support rotating members see axle(1), shouldered. For items not having any of the above conditions see pin, shoulder, headless. Excludes shaft(1), straight; and axle(1), straight.
Classification: Transmission shafts and cranks, except camshafts and crankshafts
NSN 5985-00-310-4311
NSN 6135-01-579-3534
NSN 6150-01-210-6770
NSN 6220-01-144-5166
NSN 5996-01-478-4937
NSN 5999-00-308-2485
NSN 5855-01-343-7943
NSN 4140-01-201-3380
NSN 2925-01-368-5773
NSN 5910-01-324-7176
NSN 5990-00-578-6254
NSN 6320-00-731-6134