Model # FMTLOK04-12

Internet #202284480

Store SKU #141502

Store SO SKU #336802

FastenMaster #14 4 in. External Hex Flange Hex-Head Wood Screws (12-Pack)


#14 4 in. External Hex Flange Hex-Head Wood Screws (12-Pack)

$1183 /each

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Product Overview

The FastenMaster TimberLok #14 x 4 in. Coarse-Thread Hex Wood Screws (12-Pack) are great for use on wooden decks, landscape walls and more. The screws are crafted with steel for strength and feature tapered heads that countersink easily into wood.

  • For use in wooden decks, landscape walls and more
  • Steel construction
  • 4 in. long
  • ACQ approved and nationally code compliant
  • Countersinking head design for ease of use
  • Stamped head for easy code inspection
  • Made in USA
  • Includes 12 wood screws and one 5/16 in. hex driver bit

Info & Guides

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Assembled Depth (in.)
.189 in
Assembled Height (in.)
4 in
Assembled Width (in.)
.189 in
Screw Length
4 in


ACQ Rated Fastener
Drive Style
External Hex
Driver bit included
Fastener Callout Size
Fastener Plating
Fastener Thread Type
Fastener Type
Wood Screw
Fastener/Connector Material
Finish Family
Head Style
Flange Hex
Measurement Standard
Package Quantity
Primary Use
Wood-to-wood construction i.e. decks, landscape walls, stair stringers, and much more!
Product Weight (lb.)
Self drilling
Self tapping
5/16 in
Tamper Resistant

Warranty / Certifications

Manufacturer Warranty
FastenMaster fully guarantees TimberLok against rusting or streaking for the lifetime of the project. Please see the following link for further details at:

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Customer Questions & Answers

Will these work for attaching a wood header board to the side of a shed for a roof

Asked by: robert
Yes they will work for that. The box says they can be used for deck headers, so using it to attach a header to your shed for adding an additional roof would work as well. According to the box, the screws come with a lifetime warranty for corrosion resistance if installed correctly. And people use them all the time for other outdoor projects like fences, decks, and even kids wooden play sets.
Answered by: Jimbo
Date published: 2016-05-18

Do these meet code for attaching notched 4X4 posts for rails to rimjoist

Asked by: horsewhisperer

Are these rust proof?

Can you use them on retaining walls?
Asked by: wkozak
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Customer Reviews

#14 4 in. External Hex Flange Hex-Head Wood Screws (12-Pack) is rated 4.0 out of 5 by 5.
Rated 5 out of 5 by from Most amazing product ever creates!... Most amazing product ever creates!
Date published: 2017-05-16
Rated 4 out of 5 by from tough screws A bit pricey but I built a barn screwing 2 x material to 6 x 6 posts and never twisted one off. The fact that the threads don't extend the full length of the screw allows them to pull the two boards tight against each other. Even though they are overpriced, if I had used standard galvanized lags, I would have broken a number of them, these are tough.
Date published: 2014-07-02
Rated 5 out of 5 by from Great product I have used these to assemble the gable eaves I am adding to my garage. I built 'ladders' that were then screwed to the end rafters. I was concerned that the lookouts would eventually pull away from the garage if I used nails driven into the end of the lookouts. There is no way these 4"" Timberloks are going to allow sagging. Are they pricey? Yes. Sure it would be nice if they cost less, To those who say they are TOO expensive, why did you buy them? To the person who stripped the driver, what were you putting them into?? Regular and treated lumber have given me no problem.
Date published: 2014-07-06
Rated 4 out of 5 by from #12 4" Timberlok I purchased the bulk 250 count bucket. Unlike the 50 packs the bulk timberloks look like they were droped on the factory floor. At lease 10 we defective and unusable.
Date published: 2012-05-29
Rated 2 out of 5 by from Not Cost Wise Not withstanding quality the cost is far above reasonable.
Date published: 2012-01-16
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