Sometimes, because the structure of the machine is relatively compact, the screws and nuts are not easy to be inserted into the wrench; especially the insertion of the nut is more troublesome. Try it out as shown in the figure. The effect is very good. First, find a hexagonal screw with the same size as the hexagon of the nut to be screwed. Use a metal plate as a rectangular wrench and solder it as shown. Can be used.
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