Thanks Jim,
I just bought a set of very small spline keys and hoping that one will fit.
Seems I may be in good shape when they arrive.
Thanks,


--
Roy
N5804F - PA28-181

"RST Engineering" wrote in message
...
It's not an allen, it's a spline. I had to go through about twenty little
wrenches before I found one that fit.

Jim





"Don Hammer" wrote in message
...
Don't know about little airplanes, but on many of the larger ones the
knobs fasten with a .050" allen. That size is not commonly available
in those bags of allen wrenches you get at the hardware store.