Help with Torque Spec on Steering Shaft 69 F250

[monabones]

I just pulled out the leaky power steering gear on my 69 F250 camper special. I am sending the gear to to Redhead to be rebuilt. I am also replacing the rag joint and checking all the nuts/bolts while I have access. I have searched high and low for the torque specs in my photo. I'm hoping someone has the exact torque on that dang nut. It holds the flange to the steering shaft. The rag joint attached to this flange.

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