Single-Sided Installation
Approved for single-sided installation making the job easier to complete both at ground level or for elevated applications.
FlatLOK
Structural Wood Screw
FlatLOK is designed for various multi-ply dimensional and engineered wood connections. FlatLOK is approved for single- sided installation.
FlatLOK
Structural Wood Screw
- Single-Sided Installation
- Flat Head with TORX ttap Drive
- ACQ Approved & Code Compliant
The FastenMaster LOK Line
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.
Advance Drive System
From heavy duty wood screws to multipurpose fasteners, FastenMaster has the structural fasteners you need for every project.
Approved for single- sided installation.
FlatLOK is designed for various multi-ply dimensional and engineered wood connections.
documentation
Learn more about product specifications. Explore our products resources library.
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 |
