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Products / FastenMaster / ThruLOK Structual Wood Screw

ThruLOK Structural Wood Screw

Combines the speed of a LOK product with the strength of a through-bolted connection in three decking applications: Single 2x to 4x Decking Posts (6 1⁄4″), Notched 6x Carrying Beams (7″) and Double 2x to Single 4x Decking Posts (8″).



  • Multi-ply beams
  • Deck posts
  • Carrying beams
  • And more!


  • Installs with an 18 volt cordless drill
  • No drill bits or wrenches required
  • Galvanized coating meets IRC ACQ corrosion requirement
  • Lifetime performance guarantee


  • 6 Pack: 6 ¼”, 7″, 8”
  • 24 Pack: 6 ¼”, 7″, 8″

Carriage and Through-Bolt Replacement:

  • ThruLOKs replace traditional carriage and through-bolts in applications ranging from 4½”– 9 ½”.
  • Its three-part assembly includes a screw, featuring the patent-pending Paddle Point™, engineered washer, and LOK-Nut.

10-12, 2023

International Centre, Mississauga

This year one ticket gets you into TWO shows! Your ticket to the Fall Cottage Life Show will also give you access to the Seasons Christmas Show!

The NAHB International Builders' Show®

Feb 27th-29th, 2024

Las Vegas, NV

Showcasing the latest and most in-demand products and services

Visit Liv Building Products & InvisiRail at Booth SU1615

Come visit us at...


March 21-24, 2024
International Centre, Mississauga

Explore cottage country,
all under one roof!