I've tapped normal steel QR axles for M6 screws on a couple of front wheels; although the bore is slightly over the correct pilot size for M6 they work fine. Just don't go mad tightening the screws to avoid stripping the thread - about 4Nm is plenty to hold a road front wheel. Don't do it on a disc brake MTB wheel, stick to a proper enclosed cam QR at the very least.
I've even done an aluminium one on my roller bike, although I might baulk at that for road use.
I've tapped normal steel QR axles for M6 screws on a couple of front wheels; although the bore is slightly over the correct pilot size for M6 they work fine. Just don't go mad tightening the screws to avoid stripping the thread - about 4Nm is plenty to hold a road front wheel. Don't do it on a disc brake MTB wheel, stick to a proper enclosed cam QR at the very least.
I've even done an aluminium one on my roller bike, although I might baulk at that for road use.