FastenMaster FMTSL338B-250 TrussLOK Engineered Wood Fastener, 3-3/8 Inches, 250-Count 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