I also
filter is pretty smart, 10AN?
yes…
What are those studs for? To bolt the callipers on? Why do you require studs rather than just using bolts like the normal AP 4 pot callipers?
From the
It just seemed odd, I thought you were making your own uprights, why would you need conversion studs?
Will they help me to fit these callipers on a standard car uprights?
Nah offset n spacing is way off and not enough gap between caliper n upright to get an adapter in
Custom upright needed
In my
You could have been to the moon and back for all we care bud! The only thing that unites the guys on this board is not the number of stars on our McDonald’s badges, it is enthusiasm for our Exiges and using them (and ahem other lightweights!). Keep it friendly and courteous and wind-in the patronising and antagonistic responses eh…
Conversion studs have different thread sizes at each end. Loads of OEs use them, exhaust manifold studs are a favourite.
OK…good
Beat me to it, Benja 
Seems John educated you 
Oh well, at least I now know why you designed them, I also know why you might use different thread pitches to secure different type of material.
At least I also now know there is no point getting contact to ask about buying some to fit the callipers to standard uprights even with the plates I have to fit standard AP 4 pots 
M10-1.25 surely?
But I would suspect the neck profile is either because of thermal expansion differences between the stud and upright materials or controlled elongation at desired torque, plus the plain section at 12mm dia is maximised caliper mounting rigidity.
Or you just thought it looked pretty!
But I
Now to
It is a stud and it converts one thread to another, or it converts what would have been a bolt hole into something you can put a nut on, wheel stud to wheel nut conversion kit springs to mind.
But if
It is a stud and still converts one thread style\size to another, this is all semantics, your build is very cool I can’t wait to see all the parts coming together
Gawd those