TimberLOK Structural Wood Screw

TimberLOK is a heavy duty wood screw for applications such as attaching rafter or trusses to the top plate, landscape timbers, fences, decks, headers, stair stringers and more.

TimberLOK replaces 3/8" lag screws and is approved for use in ACQ pressure treated lumber. There is no need to predrill with TimberLOK. Its sharp point and aggressive threads zip right in to the densest woods.

Unique tapered head countersinks easily into wood for flush appearance
Variety of lengths, from 2 1/2" to 10", to match every application
Free bit in every package

A 6" TimberLOK is a code-compliant way to attach rafters or trusses to a double top plate. For TimberLOK technical information, see the Technical Docs section below. For technical documentation of all our structural wood screws, see our Technical Resources page.

Click here to request a free TimberLOK Installation Guide.

Videos

TimberLOK 6" Rafter Tail or Truss to Top Plate Connection

Learn how the TimberLOK 6" Structural Wood Screw replaces hurricane ties while meeting IRC 2012 national code requirements for rafter or truss to top plate connections.

TimberLOK 6" Installation Guide for Rafter/Truss to Top Plate Applications

Learn how you can install a FastenMaster 6" TimberLOK at the correct angle using our new installation guide.

TimberLOK 6" vs. Hurricane Ties

This comparison video demonstrates time saved using the TimberLOK 6" Structural Wood Screw in place of hurricane ties when connecting rafters or trusses to the top plate.

Sku Selections
Installation
Technical Docs
Related Products
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TimberLOK SKU Selection Guide
LENGTH	TYPICAL APPLICATIONS	PACKAGING QTY	SKU
2 1/2"	Doubling/sistering up 2x header or carrying beams	12 pc clamshell	FMTLOK212-12
		50 pc box	FMTLOK212-50
		500 pc bucket	FMTLOK212-500
4"	Attaching 2x to 4x structures - fencing	12 pc clamshell	FMTLOK04-12
		50 pc box	FMTLOK04-50
		250 pc bucket	FMTLOK04-250
6"	Replacing hurricane ties on rafters or trusses. Joining multiple 4x timbers	12 pc clamshell	FMTLOK06-12
		50 pc box	FMTLOK06-50
		250 pc bucket	FMTLOK06-250
8"	Building up 6x landscape walls	12 pc clamshell	FMTLOK08-12
		50 pc box	FMTLOK08-50
		250 pc bucket	FMTLOK08-250
10"	Post and Beam construction	12 pc clamshell	FMTLOK10-12
		50 pc box	FMTLOK10-50
		250 pc box	FMTLOK10-250

TimberLOK should be installed using a high torque, 1⁄2" variable speed drill (18V if cordless). Choose the proper length so that threads fully engage the main member or bottom piece. Bring fastener head flush to wood surface or countersink head flush.

TimberLOK is not recommended for saltwater applications.

03/09/2015 3:29

ICC-ES Report, ESR 1078

The ICC-ES Evaluation Report demonstrates to the installer and code official that our LOK fasteners comply with the most current building codes. This report also provides the engineer with critical values needed to design safe installations. Reports from ICC-ES are the most recognized reports used by code officials across the U.S. This document can be shared with code officials, engineers, architects and specifiers who may have questions regarding proper use or code compliance of LOK fasteners.