[Shop-talk] Redrilling a 1/4-28 hole

[Ed Reiss]

John -- Try a Heli-coil for 1/4-20.

You drill out the current hole and rethread using the heli-coil tap. Then thread in the heli-coil. Presto-change-o -- you now have a 1/4-20 threaded hole

You might find the heli-coil kit at a well-stocked hardware store or Amazon.

Heli-coils are the go-to for stripped threads or any other reason an existing threaded hole is unusable.

Good luck
Ed
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