Sc Lock Corrosion-Resistant Type SC-3A

Although it is said that metallic screw parts were used for the previous review, what I bought was all plastic. It seems to be improved. Since it is necessary to pass the cord even when the connector is attached, we have been looking for something with a small bore diameter of the threaded part, as much as possible for the wire (outer diameter 7 mm) hole diameter. This product was exactly what Donpisha was able to pass easily even with electric wires with connectors. However, since the packing of the nut part and the mounting part is a flat packing as a difficulty, I think that it becomes more waterproof if it makes digging a groove in the nut part so that O ring can be used. In this regard ☆ 4 pieces.

I bought it as having corrosion resistance. However, since the nut on the case side is made of metal, I want you to make it of the same quality resin. I also want the screw processing accuracy to be improved. Corrosion resistance is necessary, so I would like to purchase if I can improve it.