To provide a fixing bolt and a fixing hardware capable of fixing an ALC floor panel on a floor frame firmly.

A floor panel P is fixed on a floor frame by nipping and holding the floor panel P from above and below by a fixing hardware A1 which is hooked on the floor frame and is arranged below the floor panel P and a head plate part 1 using a fixing bolt provided with the head plate part 1 in which a raising piece (resistance projecting body) 3 which bites a surface of the ALC floor panel P and generates rotation resistance protrudes and is provided on a rear surface thereof and a shaft part 2 inserted into a bolt insertion hole 4 provided in the vertical direction of the floor panel P.