The Huck FloorTight® is the only controlled, self-countersinking blind fastener commercially available. It's ideal for all wood-to-metal applications, especially plywood and plymetal. FloorTight's self-countersinking head eliminates the secondary counterboring process in plywood and eliminates dimpling in metals. Unlike screws that can be over-torqued or under-torqued, FloorTight ensures consistent, reliable installation every time.