Concentric
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 5965-01-196-1526
NSN 6145-01-013-1525
NSN 7035-00-803-3056
NSN 6645-00-955-7997
NSN 6150-01-572-5588
NSN 6150-01-157-8726
NSN 6645-00-925-2887
NSN 5925-01-481-3442
NSN 5975-01-204-9325
NSN 5999-01-184-5472
NSN 6145-01-291-2287
NSN 6320-00-886-9771