Re: Lug and Axle Nut Torque

Posted by Fish'n Jim On 2014/4/5 18:32:30

People got to realize that in dry torquing greater than 50% of the applied torque goes to overcome friction (thread and head) and is not tightening the bolt, per se. It's all in the literature. So you might think you're tightening the bolt but it could be something else requiring all that force.
They've kinda come to doing wet torquing, since alot of aluminum and studs are out there now, with "wet" vs "dry" because you get the proper tensile with much less torque. Al is easy to strip out. There's a chart for wet vs dry too. Look it up. We used those hydraulic torquers guys for the critical "big bolts", it's a science now.