FlatLOK® Screws for Multiply LVL & Lumber Beams, Girder Trusses
F Lat LOK Multi Truss Usage copy
Flat LOK Components copy
Flat LOK 412 50pcbox copy

FlatLOK is designed for various multi-ply dimensional and engineered wood connections. FlatLOK is approved for single- sided installation.


Structural Wood Screw
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Single-Sided Installation

Approved for single-sided installation making the job easier to complete both at ground level or for elevated applications.

Flat Head with TORX ttap Drive

The flat head installs flush for easy finishing including drywall or trim. Plus, gain stronger bit engagement with the TORX ttap drive system.

ACQ Approved & Code Compliant

Tested and supported by engineering data that conforms to the most current ICC standards. It is also approved for use in ACQ or treated lumber.

Flat LOK Angled copy

Part Numbers

2 7/8"  2-Ply Roof Girder Trusses  2-Ply Dimensional Wood Headers50 pc boxFMFL278-50
500 pc bucketFMFL278B-500
3 1/2"  2-Ply LVL Beams  Built up Headers and Stair StringersSingle FastenerFMFL312-INDY
50 pc boxFMFL312-50
250 pc bucketFMFL312B-250
4"  Interior Corridor Ledgers  Built up Headers and Stair Stringers50 pc boxFMFL004-50
250 pc bucketFMFL004B-250
4 1/2"  3-Ply Roof Girder Trusses  3-Ply Dimensional Wood Headers50 pc boxFMFL412-50
250 pc bucketFMFL412B-250
5"  3-Ply LVL Beams  2x and 4xSingle FastenerFMFL005-INDY
50 pc boxFMFL005-50
250 pc bucketFMFL005B-250
6"  4-Ply Roof Girder Trusses  4-Ply Dimensional Wood Headers50 pc boxFMFL006-50
250 pc bucketFMFL006B-250
6 3/4"  4-Ply LVL Beams  2x4x2Single FastenerFMFL634-INDY
50 pc boxFMFL634-50
200 pc bucketFMFL634B-200