| Torque from 90 to 98 ft-lb. T=kFd. These are high strength steel and a fine pitch, I believe its M12x1... You can easily check the stress from preloading with online calculators. Typically bolts are preloaded to about 80% of their yield point but could be different because of where it is (rotation/vibration/heat/lubrication). Solve for pre-load and divide by minor diameter cross sectional area to get tensile stress (smallest diameter of the threaded region). Rolled threads are stronger than cut threads so these are probably rolled condition. Compare this stress to the yield point of the material and this will answer your question. The hardest part might be getting the grade and condition of the steel. Refer to these for more info... [ http://www.engineersedge.com/material_science/bolt-preload-calculation.htm ] [ http://en.wikipedia.org/wiki/Bolted_joint ]
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