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Does your chainsaw bar seem a little loose? Vibrations can cause your Chainsaw Bar Nuts to loosen or even fall off. If your chainsaw bar is loose or wobbly, check the bar nuts and replace if necessary. Jack's carries a wide variety of Bar Nuts. We supply bar nuts for Echo, GB, Husqvarna, MTD, Poulan, Stihl-Aftermarket and many more! Select your manufacturer below!