[How do I?] Cut A Blind Hexagonal Hole

There are also shops that do blind hole broaching. One I used to use was Westco Broach in El Monte Ca. They do blind broaching all day long.
jimsehr
 
It's probably too late for the OP, but here's the source I had forgotten.
Maybe it will help someone else that stumbles across this thread.

I just found the old paper catalog under a pile in the shop.
It was "Reid Supply" now it's "Essentra".

Sleeves with hex thru holes:
http://us.essentracomponents.com/en...e-tool-sleeves/machine-tool-sleeves-hex-holed

The old paper catalog shows more than that web page; sizes (over 22 sizes both mild steel and hardened) and prices.

-brino
 
Instead of a traditional Allen socket, consider a Torx socket. You can drill holes for the six points and mill a central clearance hole. While it won't be the correct profile and will too not be up to the full torque load of a proper Torx socket, You should be able to apply a significant torque. The drawing shown is for a T45 socket which may be small for your application but Torx wrenches are available to T60 and beyond.
Torx Socket.JPG
 
brino said:
......of course if your only driving it clockwise, simply drill and tap a hole and use a socket-head cap screw
Click to expand...
Without knowing the base part, I'm thinking brazing the screw for reverse rotation.
 
No issues here.
I had totally forgotten about this thread and the source for hex sleeves and the existence of allan nuts.

Apparently I need to be reminded.

Brian
 
I recently used the cut-off socket from a SHCS for an internal hex, pressed into a piece of stainless:
462ab80d484f6d1e6dc973c8c41e9639.jpg
 
brino said:
It's probably too late for the OP, but here's the source I had forgotten.
Maybe it will help someone else that stumbles across this thread.

I just found the old paper catalog under a pile in the shop.
It was "Reid Supply" now it's "Essentra".

Sleeves with hex thru holes:
http://us.essentracomponents.com/en...e-tool-sleeves/machine-tool-sleeves-hex-holed

The old paper catalog shows more than that web page; sizes (over 22 sizes both mild steel and hardened) and prices.

-brino
Click to expand...
Keith Fenner uses these sleeve for his boring bars McMaster Carr has them but I cant remember the name of them
 
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