Abstract: A hinge suitable for use in tube clamps for tubing in automobiles includes two members rotatably connected together. A pair of pin shafts protrude from either one of the two members, each pin shaft having an outer wall. A pair of support holes are formed in the other member, the pin shafts being inserted into the respective support holes so that the two members are rotatable relative to each other. Each support hole has a peripheral wall, a plurality of abutment portions protruding from either one of the peripheral wall of each support hole or each pin shaft. A plurality of escape recesses are formed in the other of the peripheral wall of each support hole and each pin shaft so as to locationally correspond to the respective abutment portions.

Abstract: A stud welding method uses an inert mixed gas as arc shield in performing stud welding on a base metal, such as, vehicle body, by utilizing the stud, e.g. a T-stud, as an electrode, the stud serving as the positive pole while the base metal serves as the negative pole to thereby prevent formation of oxide film on the base metal surface during the welding, the inert mixed gas comprising carbon dioxide gas and argon gas.