Frequently repeated joints such as workpiece and parts can be fixed and separated quickly. Since it is an entirely stainless steel product, it can be used in a variety of environments. [Caution] As long as there is no remaining stock of the current specification, it will switch to a new specification. The thing that is caulking with conventional pin and body will be changed on the affixed screw. Due to this change, the parts that conducts the screwing of the flanges between pin and main body will be added, and the appearance will be changed. Due to this change in the affixing method, the caulking marks on the tapered configuration on the root side of the body will be eliminated.