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Internet # 204307978

Model # FMHLGM412-INDY

Store SKU # 1000014660

Store SO SKU # 336802

HeadLOK Structural Wood Screws – 4-1/2 inch flat head wood screws – Black (Single Fastener)

  • Heavy duty screws for wood – deck, fences & more
  • 4-1/2 inch flat headed wood screws, 8 point star bit – Single
  • HeadLOK screws replace 3/8" lag bolts in a fraction of the time
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Product Details
  • Heavy duty screws for wood – deck, fences & more
  • 4-1/2 inch flat headed wood screws, 8 point star bit – Single
  • HeadLOK screws replace 3/8" lag bolts in a fraction of the time
About This Product

FastenMaster HeadLOK is a heavy duty wood screw that does it all with an internal drive and flat head. HeadLOK offers higher design shear than 3/8" lag screws and no predrilling is needed. HeadLOK zips right in and creates a great finished look. HeadLOK is ideal for many wood-to-wood applications including decks, fences, kitchen cabinets and more. The patented SpiderDrive 8 point star bit eliminates cam-out and improves installation speed. The sleek black coating and flat headed design make it perfect for those who value superior craftsmanship. HeadLOK is guaranteed to last for the life of the project. Includes 1, 4-1/2 inch flat head wood screw. Introduced in 2007, HeadLOK was the industries first flat headed structural fastener to meet code, and has since been trusted by countless PROs and DIYers in all types of applications.

  • Versatile structural wood screw, ideal for installing decks, fences and more
  • Includes 1, 4-1/2 inch flat head wood screw
  • The flat head installs flush saving additional time and money – combined with the black coating on the fastener, HeadLOK provides a great finished look.
  • Non-countersinking, wide head for increased loads without the need for a washer
  • Installs in a fraction of the time versus traditional bolts with fewer steps and less effort
  • Replaces 3/8 inch lag bolts with no predrilling required
  • Chamfer under head for increased strength
  • Specifically heat treated to maximize strength while maintaining ductility
  • 2" of thread for greater holding strength
  • Sharp point for fast installation
  • SpiderDrive 8 point star bit offers superior bit engagement, maximizing bit fit and reducing stripping
  • Tested and supported by engineering data that conforms to the most current ICC standards (ICC-ER ESR-1078) – approved for use in ACQ or treated lumber
  • Warrantied for the life of the project
  • Return Policy
Product ID #: 204307978Internet #: 608309425298Model #: FMHLGM412-INDY

Additional Resources

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Specifications

Dimensions

Screw Length4-1/2 inSize3/8 in
Thread Pitch (mm)0 mmThreads Per Inch (TPI)0

Details

Drive StyleHexFastener ColorBlack
Fastener MaterialCarbon SteelFastener PlatingGalvanized
Fastener TypeSpecialty FastenerFeaturesNo Additional Features
Head StyleHex HeadIncludedDriver Bit
Interior/ExteriorExteriorMaterials FastenedWood to Wood
Measurement StandardSAEPackage Quantity1
Product Weight (lb.).042 lbThread StyleCoarse Thread

Warranty / Certifications

Manufacturer WarrantyLifetime
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Questions & Answers

Typical questions asked about products:

  • Is the product durable?
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Customer Reviews

4.2 out of 5
  • 4.2 out of 37 reviews
  • 60% recommend this product
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Showing 1-10 of 37 reviews
Strong silent type of screw
Strong and reliable fastening means. I used these on an outdoor wood project and they worked great. Not only are the strong but they look good too. Super easy to use too with no pre-drilling needed.
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  • Verified Purchase
  • Recommended
My wood fence was pulling away from the post in two places (middle and top). I used this with 6" ...
My wood fence was pulling away from the post in two places (middle and top). I used this with 6" screws and my fence is solid again. Would definitely buy again. Used an impact drill with the custom bit and it took about 15 seconds. Just make sure you're all lined up because you can't really pull these out.
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    • Recommended
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    • Verified Purchase
    Rebuilt 78” fireplace hearth with antique wood. These fasteners anchored the hearth to the frame. Frame was attached to the wall with aggressive fasteners too. The black color and length were ideal to make a solid attachment. Heads blended in fantastic. Different driver needed, spider head. Different and added unexpected cost to the project.
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    • Verified Purchase
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    • Verified Purchase
    I used in an area that needed the screw heads to be flush. They did want I needed.
    by
    • Verified Purchase
    Really is a great product. Pulled the two pieces together and there is no need to drill a polit hole.
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    • Verified Purchase
    Custom Driver Tip? Come on...
    Raced 20 minutes to beat closing time. Got these beefy screws to finally finish my project. Spent 20 minutes walking back and forth to the garage trying bit after bit. Star bits hex bits, torx, nothing seemed to fit. Whaddayaknow... they require a special non standard bit! My evening is shot. My project unfinished, my wife disappointed, now I need to spend another hour round trip to the store tomorrow.
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      • Verified Purchase
      I used them for construction of a new gate for my wood fence. Excellent product. Good choice of lengths available and well designed.
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      • Verified Purchase
      Showing 1-10 of 37 reviews