Semi-stripped thread on hub. Thread measurement needed for tap

[len_beach]

The thread on one of my hubs as decided to commit suicide. It is only the first couple of threads however so I'm going to try and tap it.

What is the thread pattern measurement of a 172 wheel bolt?

 

[len_beach]

I've found out that they're m12x1.5 but what is the taper or is that not required? I've seen 60 degrees but confirmation would be good.

 

[BenR]

they are not tapered.

 

[len_beach]

So just a m12x1.5 then Ben?

Taps are nigh on impossible to come by in that size.