Thd data 1/4-28, nf, 2b
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 6320-01-504-3948
NSN 6620-00-066-9035
NSN 5910-00-107-2639
NSN 5835-00-289-9080
NSN 5998-01-186-6597
NSN 7035-01-602-7966
NSN 5905-00-080-6833
NSN 5960-01-293-6624
NSN 5965-01-296-8991
NSN 5999-00-144-7698
NSN 6145-01-491-4196
NSN 6135-00-767-0331