Are there any cautions to be observed when reusing Hard Lock Nuts?

Do not use a Hard Lock Nut if when tightening the concave nut until it is pressed against the convex nut (in general, a gap of one screw pitch is needed between the concave and convex portions), no gap whatsoever is found between two nuts, as this means that the wedge effect will not function. In such a case, please contact Hard Lock Industry directly. More.

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