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Structural Fasteners

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LOC Line Structural Wood Screws

LedgerLOC flat head structural wood screw

LedgerLOC Structural Wood Screw

For attaching deck ledger boards to the rim joist of a house with no predrilling

DETAILS - LedgerLOC
LedgerLOC structural wood screw

LedgerLOC Flat Head Structural Wood Screw

For attaching deck ledger boards to the rim joist of a house with no predrilling

DETAILS - LedgerLOC
HeadLOC structural wood screw

HeadLOC Structural Wood Screw

For deck framing, stair stringers, attaching rigid foam (SIPs), fences, kitchen cabinets and more

DETAILS - HeadLOC
LedgerLOC flat head structural wood screw

TimberLOC Structural Wood Screw

For attaching rafter or trusses to the top plate, landscape timbers, fences, decks, headers, stair stringers and more

DETAILS - TimberLOC
ThruLOC Through-Bolt Replacement

ThruLOC Structural Wood Screw

No Pre-drilling required. Installs quickly with an 18 volt cordless drill without special drill bits or wrenches required.

DETAILS - ThruLOC

LedgerLOC - Structural Wood Screw

ledgerLOK deck fasteners

LedgerLOC

LedgerLOK is a code-compliant structural wood screw engineered to fasten a deck ledger board to the rim joist of a house with no predrilling.

LedgerLOK is 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.

Lag and Through-Bolt Replacement
  • Built-in washer head eliminates need for an additional washer, saving time and money
  • Large hex-head allows for greater bit engagement, reducing cam-out

Available Sizes

  • LedgerLOK 3-5/8" Ledger Board Screw (12pc, 50pc, 250pc)
  • LedgerLOK 5" Ledger Board Screw (12pc, 50pc, 250pc)

Installation: LedgerLOK should be installed using an impact driver or high torque, 1⁄2" variable speed drill (at least 18V if cordless). Choose the proper length LedgerLOK so that threads fully engage the rim material. Bring washer flush to the ledger- do not countersink. Not for use in masonry or concrete

LedgerLOK - Flat Head Structural Wood Screw

ledgerLOK deck screw

LedgerLOK-Flat Head

LedgerLOK Flat Head is a code-compliant structural wood screw engineered to fasten a deck ledger board to the rim joist of a house with no predrilling.

LedgerLOK replaces lag screws and through-bolts, has been coated with a proprietary three-step coating process that protects against corrosion (even in pressure treated wood) and is ACQ approved.

Lag and Through-Bolt Replacement
  • Built-in washer head eliminates need for an additional washer, saving time and money
  • The LedgerLOK Flat Head with TORX® ttap® drive system installs flush to the ledger installation saving additional time and money.

Available Sizes

  • LedgerLOK 3-5/8" Ledger Board Screw (12pc, 50pc, 250pc)
  • LedgerLOK 5" Ledger Board Screw (12pc, 50pc, 250pc)

Installation: LedgerLOKs should be installed using an impact driver or high torque, 1⁄2" variable speed drill (at least 18V if cordless) or impact driver. Choose the proper length so that threads fully engage the main member (i.e., rim joist). Bring head flush with ledger using the flat head style. Not for use in masonry or concrete.

When using in non-ledger applications, a design professional should be consulted for all critical connections, which include the number and location of all fasteners to meet national and local code requirements.

HeadLOK - Flat Head Structural Wood Screw

HeadLOK deck fasteners

HeadLOK Flat Head

The HeadLOK flat head fastener is a heavy-duty structural wood screw requires no predrilling and offers higher design shear than 3/8" lag screws. HeadLOK zips right in and creates a great finished look.

Features
  • 3/8" lag screw replacement
  • No predrilling
  • Flat head provides great finished look
  • The SpiderDrive™ System contains eight points of contact, maximizing bit fit and reducing stripping
  • Sharp gimlet point for fast installation into wood and OSB
  • Aggressive thread for holding and withdrawal strength
  • Free SpiderDrive™ bit in every package

Available Sizes

  • HeadLOK 2-7/8" Structural Wood Screw (12pc, 50pc, 250pc, 500pc)
  • HeadLOK 4-1/2" Structural Wood Screw (12pc, 50pc, 250pc)
  • HeadLOK 6" Structural Wood Screw (12pc, 50pc, 250pc)

Installation: HeadLOK should be installed using a ½" high torque drill (18V Cordless or higher), drive the HeadLOK head flush to the surface. No predrilling required when proper end and edge distances are maintained.

HeadLOK should be installed using an impact driver or high torque 1/2" variable speed drill (minimum 18V if cordless). Choose the proper length fastener so that the threads fully engage the main member (second piece). Bring the washer head flush to wood surface.

TimberLOK - Structural Wood Screw

TimberLOC deck screws

TimberLOK

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 into the densest woods.

Features
  • 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

Available Sizes

  • TimberLOK 2-1/2" Structural Wood Screw (12pc, 50pc, 250pc, 500pc)
  • TimberLOK 4" Structural Wood Screw (12pc, 50pc, 250pc)
  • TimberLOK 6" Structural Wood Screw (12pc, 50pc, 250pc)
  • TimberLOK 8" Structural Wood Screw (12pc, 50pc, 250pc)
  • TimberLOK 10" Structural Wood Screw (12pc, 50pc, 250pc)

ThruLOK - Structural Wood Screw

TimberLOC deck screws

ThruLOK

Installs quickly with an 18 volt cordless drill without special drill bits or wrenches required.

The 6 1/4" is engineered to connect 4x4 posts to 2x joists. The 7" is engineered to connect two 2x beams to a notched 6x6 post. The 8" is engineered to connect 4x4 posts to a double rim joist or single rim joist and 2x blocking. The 9 1/2" is engineered to attach a 6x6 post to two 2x beams.

ThruLOK's galvanized coating meets code requirements for treated wood. It's both ACQ Approved and IBC/IRC code compliant.

Available Sizes

  • ThruLOK 6-1/4" Single Fastener & 24pc box (WOOD DIM RANGE 4 1/2" to 5 1/4")
    Typically used for 4x4 deck posts to 2x rim joists connections
  • ThruLOK 7" Single Fastener & 24pc box (WOOD DIM RANGE 5 1/4" to 6")
    Typically used for 2x beams to a notched 6x6 post connections
  • ThruLOK 8" Single Fastener & 24pc box (WOOD DIM RANGE 6 1/4" to 7")
    Typically used for 4x4 posts to double rim joist or single rim joist and 2x blocking
  • ThruLOK 9 1/2" Single Fastener (WOOD DIM RANGE 7 3/4" to 8 1/2")
    Typically use for 2x beams to 6x6 post connections
ThruLOC being used in deck board installation
ThruLOC rafter installation example

VIDEO REFERENCES COURTESY FASTENMASTER

LedgerLOK Flat Head Structural Wood Screw

The LedgerLOK Flat Head includes two new features versus the original hex head design:

  • A wide washer head that can be driven flush to the ledger surface
  • the TORX TTAP Drive System.

FastenMaster LedgerLOK vs. 1/2" Lag Screws

FastenMaster comparison video demonstrating time saved installing a LedgerLOK instead of a lag screw when attaching a deck ledger to the rim joist.

FastenMaster LedgerLok Deck Ledger to Rim Board Connection

Learn the correct LedgerLOK fastening pattern for attaching a deck ledger to the rim board of a house with no predrilling.

HeadLOK Flat Head Structural Wood Screw

Learn how HeadLOK Flat head Structural Wood Screw is ideal forfastening a variety of wood applications.

FastenMaster TimberLOK Rafter/Truss to Top Plate Installation Guide

A short video showing how to install a FastenMaster 6" TimberLOK using our new installation guide.

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.

ThruLOC

Learn about ThruLOC bolt replacement.

ThruLOC

The ThruLOK system combines the strength of a through-bolted connection with the speed of a LOK fastener with no pre-drilling required