Re-Treading My Rad...what bit to use?

ziggo0 · Dec 15, 2006

Well...this is my very first rad that I used for WC...so the mounting holes are kinda borked. I'm wanting to re-thread them...so I can re-use the rad. Should I just use a regular drill bit and find a complimentary screw to fit the hole drilled or can someone make a suggestion? I noticed it was hard to find matching screws to holes drilled before.

MVC · Dec 15, 2006

I've always use regular #6 sheet metal screws on radiators; the ~drill size for a #6 screw is 7/64.

Captain Slug · Dec 15, 2006

#6-32 is the standard case screw so use the #6-32 tapping bit. Most radiators have that as well and running the tap through the holes should fix the problem.
If you drill them out you obviously would have to go to a larger screw size, which may not fit through the mounting holes on fans.

Moto7451 · Dec 16, 2006

Some rads also use M4 screws which can easily be retapped to 6-32 the same way.

ziggo0 · Dec 16, 2006

Well, I went back to the original screws I tried to use which were much to big, re-tapped to one that looked close and it fits perfectly

NOW that it's mounted...leak testing the rad now to make sure I didn't damage any of the tubes...

Mycobacteria · Dec 17, 2006

what tap did you use to tap the thread into the holes?

Re-Treading My Rad...what bit to use?

ziggo0

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MVC

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Captain Slug

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Moto7451

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ziggo0

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Mycobacteria

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