Abstract: A reinforcing bar locking device that can be easily locked at a position relatively far from an end portion of a reinforcing bar and apply a strong locking force to the reinforcing bar. The reinforcing bar (10) has a body member (11) having a through hole (11a) in which the reinforcing bar is insertable and also has a pair of fitting members (12) fitted between the reinforcing bar inserted into the through hole (11a) and the inner peripheral surface of the through hole (11a). The inner peripheral surface (11b) of the through hole (11a) is of a funnel shape whose diameter is reduced in the direction of the center axis (C). A female screw thread part (12a) with which the reinforcing bar engages is formed on the inner peripheral surface of the fitting member (12). The outer peripheral surface (12b) of the fitting member (12) is a conical surface that has surface contact with the inner peripheral surface (11b) of the body member (11).

Abstract: A nut for a reinforcing bar capable of stably maintaining its screwed state with a reinforcing bar and enabling the reduction of its projecting portion from the end face of a structural body. The nut for a reinforcing bar (10) comprises a cylindrical body part (10a), a regular hexagonal flange (10b) formed at one end of the body part (10a), and a female screw thread part formed on the inner peripheral surface of the flange (10b). The body part (10a) is insertable into a through hole formed in a concrete block, and the female screw thread part formed on the inner peripheral surface of the body part (10a) can be screwed onto a male screw part formed on the outer periphery of the reinforcing bar inserted into the through hole. Three pairs of flat parts (10d) parallel with each other with respect to the center axis (X) of the body part (10a) are formed on the outer periphery of the regular hexagonal flange (10b).