TimberLok Truss Screws by FastenMaster


TimberLok Truss Screws by FastenMaster

DecksDirect Item #6191

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Starting at: $39.99

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 Durable   DIY Friendly   Authorized Dealer

FastenMaster deck screws and fasteners are considered to be the gold standard... Learn More



The FastenMaster TimberLok replaces 3/8 in lag screws and enables you to complete wood-to-wood projects faster, easier and stronger. TimberLOK is approved in ACQ Pressure Treated Lumber. There is no need to predrill with TimberLOK; its sharp point and aggressive threads zip right in to the densest woods.

Key Features
- Stronger design shear values than 3/8 in lags
- Nationally recognized testing and code approvals
- Sharp point and aggressive thread penetrate the densest woods without pre-drilling
- Unique tapered head countersinks easily into wood for flush appearance
- Proprietary three-step coating process protects against corrosion, even in pressure treated wood. ACQ approved
- Free bit in every package

Product Specifications

Drive TypeHex
Head TypeHex
Screw Length2-1/2 in and 6 in
Screw Size5/16 in
Material Type Steel with 3 layer epoxy coating
Pack Size 50, 250, and 500 packs
Coverage Estimaten/a
Included Accessories(1) 5/16 in Hex Drive Bit
WarrantyTimberLok Warranty
OtherMade in the USA!


Additional Information

Additional Information

DecksDirect Item # 6191
Manufacturer FastenMaster

FastenMaster TimberLoc Installation Instructions and Product Info (397 KB) 

FastenMaster TimberLoc Performance Guarantee (109 KB) 


FastenMaster logo

FastenMaster deck screws and fasteners are considered to be the gold standard among professionals. With over a dozen options to choose from, you can be sure you’ll find the perfect hardware for any decking project.


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FastenMaster is constantly expanding their product line in order to ensure customers get exactly what they need at the right price. The TimberLOK Truss Screws are designed for wood-to-wood projects while the ThruLOK Screw Bolts secure posts and beams without the need for pre-drilling. The LedgerLOK Ledger Board Fasteners are some of the best available and could easily be considered the industry-standard.


FastenMaster products are recommended by professionals for quick but long-lasting results with no pre-drilling and a higher shear strength than lag screws, available here at DecksDirect.

Features and Benefits
  Durable Quality This brand offers products that are built to last and withstand the elements.
  DIY Friendly This brand is reliable and easy-to-install for professionals and DIYers alike.
  Authorized Dealer DecksDirect is an authorized dealer of this brand, dedicated to service and selection for our customers nationwide.
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