Yes, I understand the equation for the cross product and the right hand rule. People keep using this example with a wrench twisting a bolt and the right hand rule makes sense there. Okay fine, the force is perpendicular in that case... But suppose there is no bolt grooves. The bolt won't experience a perpendicular force anymore because it lacks grooves, no matter how much you turn. I.E. the bolt is completely smooth on the inside, where it contacts the nut. I think that's part of what I'm misunderstanding here. Is there some inherent perpendicular force that's part of torque? Let me know if I'm not explaining my confusion clearly.