Products > LOK Line - Structural Wood Fasteners > TrussLOK Multi-ply Engineered Lumber Fastener
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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, Trus 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.

  • 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

TrussLOK® is a code-compliant way to connect multiple plies of engineered lumber. View an application video in our Ask The FastenMaster Section or download our technical bulletins in the Code Approvals section.

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Fastener Lengths:3 3/8", 5", 6 3/4"
Packaging Size:50 pc box, 250 pc bucket

TrussLOK should be installed using a 1⁄2" corded or 18 volt cordless drill. Bring underside of washer-head flush with wood surface. Do not countersink. Choose correct TrussLOK length. For fastener spacing and patterns refer to our technical bulletin.

ThruLOK® Screw Bolt Fastening System

The speed of a LOK fastener. The strength of a through-bolted connection.

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