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Removing M4 screw

6K views 9 replies 9 participants last post by  Big Al 
#1 ·
M4 screw into alloy housing . Despite lots of plus gas the head sheared . Is trying to weld a nut on worth a try or should I try to drill it out. I'm guessing it's too small to weld successfully
 
#3 ·
Did you get anywhere with this?

I don't think there is an easy correct answer.

I'd be drilling but it wont be easy, if its not corroded drilling might work best, if there is bad corrosion heat might be more useful.

I don't know that's why I'm interested.

I did have the same problem with M5 corroded for an ABS sensor in a S Type Jag and drilled it out but it wasn't a perfect job. Everything on those cars seemed to be steel in aluminium and very seized, horrible to work on.
 
#8 ·
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