As StrangerDanger posted. It’s a general rule of thumb. Not sure it’s the perfect idea, but it’s worked for me.
I would guess I applied about 25 inch pounds, I’d you need a number. And that is with the thread locker, if threads were dry, torque would be about 10% higher.
A torque spec chart I have lists 2.48 n*m for that size fastener.
that works out to be 21.9 inch pounds