Eddy, I have to disagree on your conclusion and assumption. Whoops....those definitive statements can get me in trouble. A 6" extension WOULD be like a 12" socket IF said socket had it's square drive centered over the circumference of the socket. You weren't trying to catch me were you, cause I'm kinda paranoid about posting these days. <img src="/forums/images/graemlins/baby.gif" alt="" /> <img src="/forums/images/graemlins/lol.gif" alt="" />

As for as the size of the fastener is concerned, it has many effects but they relate to clamping force,maximum clamping force,amount of torque needed to achieve a given clamping force and many others.The size of the fastener doesn't have an effect on the torque applied to it.IT JUST REACTS TO IT. Engineers take into account tensile strength, thread diameter,thread pitch, application and God knows what else when setting torque specifications, we just need to know how to plug the variables into a conversion formula and read a torque wrench scale. <img src="/forums/images/graemlins/cheers.gif" alt="" />

Scotty

P.S. I hadn't read LeeN's or Frank's post before composing this one, I swear. I could just delete it but I'm not. <img src="/forums/images/graemlins/smile.gif" alt="" />