To provide a connection means capable of sufficiently coping with the requests of high-rise buildings and antiseismic buildings and efficiently, safely, and easily fixable at low cost without requiring any skill, a bolt hardware, a nut fixing hardware, a jaw type nut, and a clamping ring used for the means.

This connection means for construction comprises mainly the jaw type nut 6 fitted into the through hole P of a first member E from one side and a fixing bolt B threaded with the jaw type nut 6 used for connecting the first member E for construction to a second member F for construction. The means also comprises the tubular nut fixing hardware 1 threaded to the jaw type nut 6 and fitted to the through hole P according to the elements (sizes, materials, and installation strengths) of the first member E and the second member F and at least one of the clamping ring 7 and the washer 9 fitted into the fixing bolt B. In addition, the means selectively comprises a reinforcement member 4 for the jaw type nut 6 and an anchor bolt 5 buried in a concrete Z filling from the outside of the hollow first member E into a hollow part L and solidified.