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One thing I have learned is that all 5160 is not the same, it does not usually have the quality control that is enjoyed by some other steels. If you want some great 5160 you an get it from John Deer in their Load Control Shafts, also called load control pins. The one I have now is about 1 1/4 inch round bar, 21 1/2 inches long, part number is R46513 or 2011303DY on the mailing tube. Every one that I have used has been premium, all the same, no faults and work up very nicely. A new one was $125 last time I checked, used ones can be free or a dozen donuts if you are lucky. John Deer has demanded the quality control for us and provides us with an opportunity that is hard to achieve as it eliminates having to dance around unknown variables.
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Ed Fowler
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