To make it cost advantageous and reduce an exchange time further in a throw-away die arranged in a nail manufacturing machine and to be used for forming a wire material being a nail raw stock.

This throw-away die 13 for a nail manufacturing is to be constructed in a way that only a straight part 15b of a chuck groove 15 is installed in the throw-away die 13 made of a hard metal, and its size is miniaturized. Further, the chuck groove 15 of the same shape and the same size is installed at plural places where are rotary symmetrical positions against a central axis of the throw-away die 13, and the plural number of the chuck grooves 15 per one throw-away die 13 are made to be used sequentially.