The M7 X 1's are too small. Owner is going to check with Backdraft on why the variance. I guess they could be Wilwood brakes, but I am not sure, just know the M7X1's size is too small.
If you have a metric and SAE tap and dies set to measure would be handy as they have thread pitch gauge in them. Or run down to the local ACE Hardware to match up via their hardware bins for Dia and pitch.