Hello 37 chief, I just need to add some more on my post, to make it a bit clearer. The 125 torque setting on my example will give you 103 ft. Lb. at the fastener, because the lenght of the torque wrench was 2.56 in is longer. In other words it takes only 103 Lb. pressure, with the extension of 2.56 in., to achieve 125 L. Ft. at the fastener. It also meas that to get 125ft. lb. at the fastener you need to set the torque wrench at 103 Ft Lb. Longer leverage, less effort For a given torque. Also it does not matter if the socket has an extension to the torque wrench. If the extetion is a crowsfoot, and the head of the torque wrench is perpendicular, not offset to the fatsner, no change in torque applied. If it is offset and makes the lenght of the torque wrench longer, from the sockethead of the torque wrench to the handle, than the formula that i gave you applies. Also dry threads are not torqued the same as oiled threads. Usually oiled threads are torqued 10 to 20% LESS! Just fallow the manufaturer specifications. You will find that the type of lubricant changes with the manufaturer, form light engine oil to gear oil. All torque specifications Are for clean threads, wet or dry. Above all, you need to use an accurate torque wrench, steady even pressure while applying torque, and no snappy movements of the arm. In other words steady pressure,let the torque wrench surprise you when it clicks. I hope this makes it clearer for you.
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