2013
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11
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29
Structure and principleThe top nut assembly consists of round nuts and several top screws and a hard pad, which can be used directly to replace the traditional standard six angle nut. Screw it on the bolt, stud or threaded rod, shaft, the main screw bolt / stud nut placed on the hard flat pad. After the round nut is in place, the actual tightening of the bolt / stud will tighten the top screws aro...