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Changing out the screw will not work

posted by  riverbend on  Sat Jun 11 15:13 CST 2016
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last visit: Wed Oct 22 15:29 CST 2014
[RELATED]

I think you are supposed to pull the motor out to get to that one...

An 8mm head indicates a 5mm thread, ~0.2". Does that sound right ?

There is a fine thread option, but in aluminum they should have used a coarse thread, so the pitch should be 0.8mm. You can eyeball it against a ruler. The fine pitch is 0.5mm.

The drill size for an M5 helicoil is 5.2mm (or 13/64"). The amount of material to remove is 0.004" (hole size increases by 8 thou.). The drill will follow the existing hole once it gets started, so no need for a level. I would be tempted to try screwing the drill in by hand with a pin vice or some other sort of collet to get a grip on it.

I don't have any inserts that small.

Greg





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