FastenMaster FlatLok 3-1/2 In. Engineered Structural Wood Screw 50 Ct.

New no predrilling fastener for truss work. Designed to fasten multiple LVL engineered lumber together single-sided installation. Includes hex head driver bit. Available in 3 sizes. The TrussLOK engineered wood fastener is designed for joining multi-ply LVL LSL and PSL. This fastener was developed with direct input from a leader in engineered wood Truss Joist. TrussLOK is faster easier and stronger than through-bolts and other structural self-drilling fasteners with similar diameters. And TrussLOK is approved for single-sided installation unlike nails and other screws of similar diameter that need to be installed from both sides. Each pack size of TrussLOK contains a free driver bit. TrussLOK fasteners are American made.