found a cool torque calculator, dont know just how accurate it is but its a start point. does not have a prevision for if a lubricant is used though. common sence tells ya your torque should be reduced though.
I needed to figure out torque for a 5/8-18 cad plated grade 8 bolt in hard anodized 6061 T6 aluminum with a aprox. 81. thread engagement. its the best I could find so far. does seem kinda high at the recomended torque of 132 FT lbs., but I will creep up on it atleast. might install bolts with a touch of anti-sieze so as not to gall the aluminum. if I do I will have to liwer my torque ofcourse, to exactly what.....not sure.
http://www.futek.com/boltcalc.aspx
I needed to figure out torque for a 5/8-18 cad plated grade 8 bolt in hard anodized 6061 T6 aluminum with a aprox. 81. thread engagement. its the best I could find so far. does seem kinda high at the recomended torque of 132 FT lbs., but I will creep up on it atleast. might install bolts with a touch of anti-sieze so as not to gall the aluminum. if I do I will have to liwer my torque ofcourse, to exactly what.....not sure.
http://www.futek.com/boltcalc.aspx
