FastenMaster FMTSL634-50 TrussLOK Engineered Wood Fastener, 6-3/4 Inches, 50-Count, 6-3/4", Red No predrilling faster and easier than through bolts Higher side load capacity with fewer fasteners saves time and labor Correct thread length for engineered lumber--no board jacking Prevents gapping or cupping between plies, which can occur in nailed applications Winged point, modified thread design, and anti-friction coating combine to significantly reduce installation torque