FastenMaster FlatLok 3 1/2" Structural Wood Screw 50 pc box - FMW

FastenMaster FlatLok 3 1/2" Structural Wood Screw 50 pc box


Quantity Unit Price
1 to 23 $42.98
24+ $42.08
Regular price$42.98 USD

  • $100 orders ship FREE
  • In stock
  • Inventory on the way

If you need a shorter screw that still finds multiple ways to be useful, these wood screws are a versatile, durable choice. 

You can use these 3½” FlatLOK screws for fastening multi-ply beams and girder trusses, as well as corridor ledgers. They can bite through dimensional and engineered wood with little difficulty.

The head design is what makes these units standout. The FastenMaster FlatLOK design lays flush with the drilling surface, creating a clean, even finish you can cover with drywall or trim. By utilizing a Torx drive system, the head allows for multiple bit fits to cut down on stripping potential.

You’ll receive a custom bit that matches up with the screw’s head. Both parts have a corresponding stability pin and pinhole that link up to reduce wobbling while improving control, which results in the screw driving evenly into the wood.

FMW Fasteners gives you the ability to customize the quantity of your 50-piece boxes. That way, you can order the closest amount possible without having a lot of leftover hardware. We offer hassle-free returns, too, so you can send back any wood screws you don’t use.

We offer free shipping on qualified orders. Order your FastenMaster wood screws today!

Most orders placed with us ship in 1-3 business days. More details here on how you can check on the status of your order.

All of our item images are accurate representative images of the product category, however, due to the limitless variations in thread patterns, finishes, and other variables that exist with fasteners, bits and cutting tools, they are representative images only.



They were swift and delivered fast! They had everything I needed.

Eddie Wilcox
Parma, OH


Exactly what we needed and apparently FMW is not only the single source, but the best source. Easy ordering-fast shipping and great communications.

John B.
Salem, OR

Exactly what I needed and received in a timely manner. Thank you!

Mary Marucci
Philadelphia, PA

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