FlatLOK

Structural Wood Screw
Flat LOK LVL cropped for label 2019 copy
F Lat LOK Multi Truss Usage copy
Flat LOK Components copy
Flat LOK 412 50pcbox copy

FlatLOK delivers strong, code-compliant connections for multi-ply LVL, girder trusses and multi-ply lumber beams

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

Technical Bulletins / Installation Guides


Product Detail Drawings


Evaluation Reports


Product Brochures


Structural Detail Drawings


  • FlatLOK - Multi-Ply Girder Truss - Detail FL01 (DWG)
  • FlatLOK - Multi-Ply Girder Truss - Detail FL01 (PDF)
  • FlatLOK - Multi-Ply Dimensional or EWP Beam - Detail FL02 (PDF)
  • FlatLOK - Multi-Ply Dimensional or EWP Beam - Detail FL02 (DWG)
  • FlatLOK - Multi-Ply Dimensional or EWP Column - Detail FL03 (DWG)
  • FlatLOK - Multi-Ply Dimensional or EWP Column - Detail FL03 (PDF)
  • FlatLOK - Interior Ledger to Stud (w or w/o GWB) - Detail FL04 (DWG)
  • FlatLOK - Interior Ledger to Stud (w or w/o GWB) - Detail FL04 (PDF)

Part Numbers

LENGTHPRIMARY APPLICATIONSECONDARY APPLICATIONPACKAGING QTYSKU
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 Stringers50 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 4x50 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  2x4x250 pc boxFMFL634-50
200 pc bucketFMFL634B-200