FlatLOK
Structural Wood Screw
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.
FlatLOK Structural Wood Screw
Technical Bulletins / Installation Guides
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FlatLOK Technical Bulletin
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FlatLOK Technical Bulletin (Canadian)
Product Detail Drawings
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FlatLOK Fastener Technical Drawing (DWG)
Evaluation Reports
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FlatLOK IAPMO Evaluation Report - 718
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FlatLOK Technical Evaluation Report (Canada) - 1503-01
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FlatLOK Technical Evaluation Report - 1611-01
Product Brochures
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FlatLOK Sell Sheet
Structural Detail Drawings
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FlatLOK - Multi-Ply Girder Truss - Detail FL01 (DWG)
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FlatLOK - Multi-Ply Girder Truss - Detail FL01 (PDF)
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FlatLOK - Multi-Ply Dimensional or EWP Beam - Detail FL02 (PDF)
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FlatLOK - Multi-Ply Dimensional or EWP Beam - Detail FL02 (DWG)
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FlatLOK - Multi-Ply Dimensional or EWP Column - Detail FL03 (DWG)
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FlatLOK - Multi-Ply Dimensional or EWP Column - Detail FL03 (PDF)
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FlatLOK - Interior Ledger to Stud (w or w/o GWB) - Detail FL04 (DWG)
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FlatLOK - Interior Ledger to Stud (w or w/o GWB) - Detail FL04 (PDF)
Part Numbers
| LENGTH | PRIMARY APPLICATION | SECONDARY APPLICATION | PACKAGING QTY | SKU |
| 2 7/8" | 2-Ply Roof Girder Trusses | 2-Ply Dimensional Wood Headers | 50 pc box | FMFL278-50 |
| 500 pc bucket | FMFL278B-500 | |||
| 3 1/2" | 2-Ply LVL Beams | Built up Headers and Stair Stringers | Single Fastener | FMFL312-INDY |
| 50 pc box | FMFL312-50 | |||
| 250 pc bucket | FMFL312B-250 | |||
| 4" | Interior Corridor Ledgers | Built up Headers and Stair Stringers | 50 pc box | FMFL004-50 |
| 250 pc bucket | FMFL004B-250 | |||
| 4 1/2" | 3-Ply Roof Girder Trusses | 3-Ply Dimensional Wood Headers | 50 pc box | FMFL412-50 |
| 250 pc bucket | FMFL412B-250 | |||
| 5" | 3-Ply LVL Beams | 2x and 4x | Single Fastener | FMFL005-INDY |
| 50 pc box | FMFL005-50 | |||
| 250 pc bucket | FMFL005B-250 | |||
| 6" | 4-Ply Roof Girder Trusses | 4-Ply Dimensional Wood Headers | 50 pc box | FMFL006-50 |
| 250 pc bucket | FMFL006B-250 | |||
| 6 3/4" | 4-Ply LVL Beams | 2x4x2 | Single Fastener | FMFL634-INDY |
| 50 pc box | FMFL634-50 | |||
| 200 pc bucket | FMFL634B-200 |
