First end has a 2nd identical circular groove 0.684 in. From its 1st circular groove; second end's circular groove is adjacent to a woodruff keyseat and a 2nd identical circular groove; nha gear box assembly
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 5990-01-113-0303
NSN 5960-01-563-4797
NSN 5895-01-294-3886
NSN 5855-01-122-9418
NSN 5920-01-132-9395
NSN 5999-01-013-9236
NSN 5835-01-432-1277
NSN 2925-00-185-1618
NSN 5998-01-410-5072
NSN 6320-01-415-0953
NSN 5905-01-148-1215
NSN 6320-01-280-5091