Is a self tapping screw suitable?

[carterturner]

As in my previous thread, I tried to use easy-out to remove a broken bolt (6mm). The drilling was centered and straight. The Grabit #1 easy-out went in perfectly. But with not much force, the Grabit broken inside.

The only purpose of this screw hole is to attach a sub-ground cable. I give up on trying to get the stud out.

Here is my plan B:

Drill a hole next to the broken stud and secure the cable with a screw. The material is cast aluminum.

The question is: will a self tapping screw work? or I'd better get a tap and die set?
visionguru is offline

Please Help.
Thanks !
I didn't find the right solution from the internet.
References:
-https://www.garagejournal.com/forum/showthread.php?t=370300
- Motion Graphics Videos