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Old 11-17-2010, 10:02 AM
cn90 cn90 is offline
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Location: Omaha NE
Join Date: Mar 2006
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Mein Auto: 1998 528i 5-sp 140K+
DIY: How to remove stuck rotor screw in any car

The following is a generic DIY, true for Mazda, Honda, BMW or whatever car you have.
The rotor screw, in 99.9999% of Japanese and European cars, is the 6mm type.

DIY: How to drill stuck rotor screw

The following is a generic procedure for any rotors with stuck rotor screw. I use Mazda6 rotor (almost identical setup as Honda) for illustration purpose. BMW rotor screw sometimes get stuck after so many years in there.

This is why whenever you work on any brake job in any car, have those spare rotor screws ready.


1- Honda screw is M6 thread type. The head widest part is 12 mm. FYI: BMW uses Allen head.

2- Thread is 6mm, Head is 12mm, so use a 9mm or 11/32" drill bit. The rotor screw is made from soft metal, so when drilling it out, the moment you hit the rotor (which is made from much harder metal), you will hear a different sound/feel etc. ---> then stop drilling.

By now, you should have a "ring" at the tip of your drill bit.

3. Once the rotor is off (if rotor is stuck, use extractor bolts as mentioned on the 1st page of this thread to remove the rotor). Then remove the remaining part of the rotor screw with your fingers or vice-grip.

Pretty simple, isn't it? Go tell your mom you just did something good today!

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