On Sep 12, 8:11*am, " wrote:
I am wanting to make some very long hex shank drill bits for a wood
working project that I am working on. *I am having to drill into very
tight areas that I can't get my drill into. *I have some long aircraft
drills that I want to add a hex shank to. *I figured to save some time
I could drill out a hex coupling nut but the problem is that the
smallest one that I could find is 5/16 across flats. *Is there anyone
out that sells smaller coupler nuts?

I also thought about annealing a hex key and drilling that out.

Does anyone have any other ideas?

Any help would be greatly appreciated. *Thanks

McMaster Carr -- www.mcmaster.com carries steel "hex stock". See item
#'s 6512K12 and 6606K11. Six foot lengths are under $6 each. (Not
sure what shipping costs.)