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 6610-00-107-1944
NSN 6240-01-194-2206
NSN 5930-00-349-2234
NSN 6150-00-891-4097
NSN 5945-00-012-9199
NSN 5855-00-631-4565
NSN 5855-00-014-5008
NSN 5996-01-187-8571
NSN 5999-00-479-6700
NSN 5996-01-262-5694
NSN 6240-01-069-2688
NSN 5960-01-203-9814