Custom M12 Bolts make in PEEK

[m_c]

For CNC you still need some form of gauge to check the size/fit.
CNC has the advantage that it should be easier to get things on size, and then once things are set on size, they shouldn't change by much.

From the original post, I'm assuming tolerance isn't that tight.

[Tenson]

Yes tolerance isn't that tight at all. They are only meant to be done up finger-tight. Hex head is not needed. However my friend said he has run out of money for now and will need to wait a few weeks.

[anthonycooper]

hex rod ,,in the lathe no problem 2 min job