I thought DA recommended 70 inch-pounds but don't quote me on that number. I don't use a torque wrench. Just an allen wrench. I start tightening the bolts across from one another in an alternating pattern. When I feel that all bolts are tight enough, I stop. Once you get a feel for it, the hand method works great. Just don't over torque them or you crush the prop (if it's wood). Also make sure you re-check the prop bolts after the first flights. Then every 5-10 flights after that. Prop bolts should be checked for the life of the plane...just like any other maintenance. I think that's why you hear about sheared bolts now and then.