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Store SKU #369666

3/8 in. x 6 in. Hex Drive Hex Head High Corrosion Resistant Coating PowerLag Screw

$288
  • No Pre-Drilling in Wood
  • Heat-treated (Grade-5) for high strength and durability
  • HCR coating provides high corrosion resistance
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Product Overview

The SPAX Factor - For the craftsman that concentrates on the details, We Work for You. For the Pro that puts qualify first, we help you create stronger connections, enhance performance and improve results when your reputation is on the line. Say Good Bye to your fathers traditional lag. SPAX PowerLags offer superior installation performance and durability over traditional lag screws and carriage bolts for structural wood construction. Made of carbon steel and coated for long term durability to ensure your project endures. U.S made SPAX is your trusted partner for your fastening needs. Do it Once, Do it Right with SPAX.
  • Check out our Threads! Our patented thread serration technology allows the screw to be driven faster, reduces splitting in wood, and reduces driving torque by 40 percent. Let the SPAX FACTOR take some of the hassle out of your next project
  • The ideal replacement for the conventional lag. IRC/IBC Code Compliant: TER-No. 1912-14
  • True to size thread diameters, grade 5 heat treat, and the washer head style are just some of this fastener's distinct advantages. Tested under the toughest scenarios to give you confidence in every connection
  • The HCR (High Corrosion Resistant) double barrier coating is tested and recognized for use in ground contact and pressure treated lumber for exterior fresh water general construction applications
  • Engineered and Manufactured in the USA
  • SPAX 3/8-in. Hex PowerLags require a 1/2-in. Hex Driver
  • Common applications: Landscaping timber, deck ledger attachment, fencing, exterior treated lumber, structural wood to wood connections

Additional Resources

From the Manufacturer

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3/8 in. x 6 in. Hex Drive Hex Head High Corrosion Resistant Coating PowerLag Screw
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BrandGRK FastenersSPAXSPAXSPAX
Name5/16 in. x 6 in. RSS Star Drive Washer Head Alternative Lag Screw3/8 in. x 6 in. Hex Drive Hex Head High Corrosion Resistant Coating PowerLag Screw1/2 in. x 5 in. PowerLag Hex Drive Washer Head High Corrosion Resistant (HCR) Coating Lag Screw1/2 in. x 8 in. Hex Drive Hex Head High Corrosion Resistant Coating PowerLag Screw
Price
$211
$288
$328
$398
Ratings
(544)
(44)
(14)
(24)
Size5/16 in3/8 in1/2 in1/2 in
Screw Length6 in6 in5 in8 in
Fastener PlatingCoatedMagniMagniMagni
Drive StyleStarHexHexHex
Package Quantity1111
Interior/ExteriorExterior,InteriorExterior,InteriorExterior,InteriorExterior,Interior
Fastener/Connector MaterialSteelSteelSteelSteel
Head StyleWasher HeadHexHexHex
Finish FamilyZincGreenGreenGreen
View ProductView ProductView ProductView Product

Specifications

Dimensions

Screw Length
6 in
Thread Pitch (mm)
6 mm
Threads Per Inch (TPI)
5

Details

Color Family
Green
Drive Style
Hex
Fastener Plating
Magni
Fastener Thread Type
Coarse
Fastener Type
Lag Screw
Fastener/Connector Material
Steel
Features
ACQ Rated,Coated,Self Drilling,Self Tapping
Finish
HCR
Finish Family
Green
Grade
Grade 5
Head Style
Hex
Included
Screw
Interior/Exterior
Exterior,Interior
Measurement Standard
SAE
Package Quantity
1
Product Weight (lb.)
.123 lb
Returnable
90-Day
Size
3/8 in

Warranty / Certifications

Manufacturer Warranty
For warranty information on this product, please call the Customer Service Center at 1-800-435-4654.

Questions & Answers

Typical questions asked about products:

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Customer Reviews

  • 4.8
    out of 44 reviews
  • 88%recommend this product
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Showing 1-10 of 44 reviews
I discovered these great lag bolts several years ago when building a deck and have used them many...
I discovered these great lag bolts several years ago when building a deck and have used them many times since for applications needing high corrosion resistance and ease of driving such as reattaching the skids on my dock float and sistering a 3 x 8 timber on the dock ramp. Both of these are situations that required awkward positioning and driving with a battery powered impact driver. The special threads self drill and reduce driving difficulty and the hex heads handle the driving load with ease.
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  • DIY
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  • Recommended
1 found this review helpful
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  • Verified Purchase
These lag screws are awesome. Used them to connect...
These lag screws are awesome. Used them to connect 4x4 vertical posts and 4x4 cross pieces for an outdoor sign mounting structure. I did pre-drill 1/4 in holes to get them started, although that is not really necessary. I just wanted to ensure they were going in perfectly straight. Locked down tight with a socket wrench. I also countersunk them, so they should last a long long time.
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by
    They worked. I needed shorter but they didn't have them...
    They worked. I needed shorter but they didn't have them and I didn't have time to wait. See how they hold up long term
    by
      Not worth it, just used galvanized lag bolts. One of...
      Not worth it, just used galvanized lag bolts. One of these snapped on me, and no, they are not self-tapping so why bother?
      by
        MISREPRESENTED the SIZE Says it's a 3/8" BUT...
        According to the specifications, it's a 3/8" lag screw, it's NOT! If you measure the SHANK (where you're supposed to), you'll find that the SHANK is only 1/4". the ONLY place the screws measures 3/8" is across the outermost edges of the threads, WRONG!
        by
          by
            These worked just find to add 4x4 posts to my...
            These worked just find to add 4x4 posts to my deck. Easy to screw in, no pre-drilling or pilot holes needed. Only time will tell the true quality of these lags.
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            • Verified Purchase
            Showing 1-10 of 44 reviews