Abstract: A reinforcing bar connector is capable of connecting reinforcing bars easily and in a short time without using a screw-tightening tool. The reinforcing bar connector has a reinforcing bar holding section having a female screw thread part screwed on a male screw part on the outer periphery of the reinforcing bar; a flat, plate-shaped engaging section extending in the direction of a center axis C from the reinforcing bar holding section; a locking projection provided on the engaging section; and a locking hole provided in the engaging section and allowing for engagement of the locking projection of another reinforcing bar connector to the locking hole. A stopper for preventing the locking projection from falling out of the locking hole is provided at a distal end of the locking projection. An attaching hole having an inner diameter through which the stopper can pass is formed next to the engaging hole.

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).