Shoulder on plain end threaded, 0.250 inch-20 uns-3a
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 4140-01-411-7445
NSN 6145-01-432-2440
NSN 5910-01-115-4000
NSN 5965-01-323-7225
NSN 6240-01-415-5149
NSN 5920-01-112-5399
NSN 5910-00-224-9815
NSN 5910-00-782-9469
NSN 5910-00-518-1477
NSN 5925-00-401-2739
NSN 5960-01-605-9921
NSN 7035-01-169-6551