Chuck for combining full-stud bolt and manufacturing method therefor

The present invention relates to a chuck for combining a full-stud bolt having a screw part, a flange part, and a connection part for connecting the screw part and the flange part to each other, and provides a chuck for combining a full stud bolt and a manufacturing method therefor, the chuck comprising: a tooling member for combining a cutting tool; a body part extending from the tooling member and having a hollow hole; and a shank member formed on the inner surface of the hollow hole and including a sealing part making surface contact with an outer circumference of the connection part along the circumferential direction thereof over all sections in the longitudinal direction of the connection part.