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What tap to use for helicoil insert for m7x1 thread?

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I'm needing to repair a m7x1 thread hole. I have the helicoils here, but not the tap. Can anyone tell me the correct tap for the drilled hole for the insert? Or does it have to be helicoils brand tap? Thanks

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@ohiodrz400sm

Wouldn't it be a bigger one since the hole drilled for the insert is bigger than the stripped out m7 thread hole? Not saying you're incorrect I'm just overthinking things here

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yes you need an tap marked STI and make sure you don't drill the hole to big.

Just so you know a m7x1 is not a standard thread , you may a hard time finding a tap 

MSC direct has them part #64833502  at $27.71

20170606_152931.jpg

Edited by GreenMT_Rider
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Thanks for all the help guys. Looks like I should've just ordered the kit and not just the helicoils. I figured I have all the drill bits and tap and die sets in the world so I could save 40$ and ordered just the coils themselves. Trying to save a buck bit me this time.

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