If anyone out there has a T-rex with a metal head, could you measure the feathering spindle for me?

My CF/Metal Belt CP uses a spindle with female ends to accept a socket bolt. I just recieved a pile of parts to repair it and the feathering spindle from the plastic head version is nowhere close to being correct.

Everyone that carries the CF/Metal parts for the Belt is out of stock. So I'm screwed right now when it comes to getting this heli back in the air.