Steering column nut torque

1963 Plymouth valiant.

Grant steering wheel installation kit.

The nut that holds the adapter onto the splined shaft. It uses the factory nut. No torque specs in directions.

Anybody have the torque spec on this nut?

I know it can be over tightened. Lol. I did just that and broke our old turn signal switch horn button springy thingy.

Thanks. Eric