Unique thread design forms mating threads in the crossmembers
50% greater thread engagement for increased resistance to strip-out and pull-out
Requires 40% less drive torque
Greater tolerance to hole size variation
Patented TORX® drive head permits non-slip installation
Phosphate- and oil-coated black finish
The best screw available for truck trailer floor board installation
TORX® Drive Bit T40 fits 5/16" dia. screws. Recommended drill bit sizes: 9/32 for steel; H for aluminum.