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Store SKU #1001653754

1/4 in. x 6 in. T-Star Washer Head Exterior HCR PowerLag Screw

  • No Pre-Drilling in Wood
  • Heat-treated (Grade-5) for high strength and durability
  • HCR coating provides high corrosion resistance
  • See More Details
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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.
  • The trend setting low profile built-on washer head design offers a contemporary and sleek finished installation. Excellent draw down strength without the need for a separate washer delivers superior clamping ability and 40% less driving torque.
  • Stay Stronger for Longer! Heat Treated Grade 5 Durability. Subjecting the screw to heat treating gives greater strength and reduces breakage. Tested under the tougest scenerios to give you confidence in every connection.
  • Check out our Threads!! Our patented thread serration technology allows the screw to be driven faster, easier to install, and reduces splitting in wood. Let the SPAX FACTOR take some of the hassle out of your next project.
  • The ideal replacement for the conventional lag. ICC-ES building code recognized for use in structural wood to wood applications. Check out our ICC-ES Report ESR-1866
  • Options! And more Options! Offers the largest selection of code recognized structural wood to wood engineered fasteners in the industry.
  • Manufactured to Imperial size standards with industry leading pull-through and withdrawl values.
  • T-Star drive accepts and is compatable with all industry standard bits. Our 6-Lobe design provides superior bit engagement. Better bit engagement means quicker installation with less effort.
  • ICC recognized HCR coating makes these screws ideal for use in treated lumber and exterior applications.
  • T-30 Star Drive System

Info & Guides

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Top Rated1/4 in. x 6 in. T-Star Washer Head Exterior HCR PowerLag Screw
BrandSPAXSPAXSPAX
Name3/8 in. x 5 in. Powerlag Hex Drive Washer Head High Corrosion Resistant Coating Lag Screw3/8 in. x 6 in. Powerlag Hex Drive Washer Head High Corrosion Resistant Coating Lag Screw1/4 in. x 6 in. T-Star Washer Head Exterior HCR PowerLag Screw
Price
$195
$228
Ratings
(33)
(36)
(45)
Fastener Length (in.)566
Size3/8 in3/8 in1/4 in
Screw Length5 in6 in6 in
Fastener PlatingMagniMagniMagni
Drive StyleExternal HexExternal HexTorx
Package Quantity111
Interior/ExteriorExterior,InteriorExterior,InteriorExterior,Interior
Head StyleFlange HexFlange HexWasher Head
Finish FamilyGreenGreenGreen
FeaturesACQ Rated,Coated,Self Drilling,Self TappingACQ Rated,Coated,Self Drilling,Self TappingACQ Rated,Coated,Self Drilling,Self Tapping
View ProductView ProductView Product

Specifications

Dimensions

Fastener Length (in.)
6
Screw Length
6 in
Thread Pitch
.138

Details

Color Family
Green
Drive Style
Torx
Fastener Length
6 in
Fastener Plating
Magni
Fastener Thread Type
Coarse
Fastener Type
Specialty Fastener
Fastener/Connector Material
Steel
Features
ACQ Rated,Coated,Self Drilling,Self Tapping
Finish
HCR
Finish Family
Green
Grade
Grade 5
Head Style
Washer Head
Included
Screw
Interior/Exterior
Exterior,Interior
Measurement Standard
SAE
Package Quantity
1
Product Weight (lb.)
2.42
Size
1/4 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

  • 4.3
    out of 45 reviews
  • 75% recommend this product
Filter by:
Showing 1-10 of 45 reviews
Awesome, awesome screw - I love these style of screws and use the interior ones all the time. Th...
Awesome, awesome screw - I love these style of screws and use the interior ones all the time. These sink in easily and the T-star head never slips. The washer head sucks the wood to what you are drilling into without having to use a washer. I am a huge fan of these and grab these over galvanized lag screws every time. These hold weight well. I used these to attach the legs to a planter box I made which was probably overkill but these are what I had on hand. I pre-drilled the holes but I don't know that it was necessary for what I was doing. I also like using these because I can keep using the T-style bits that are already in my drill for other screws so I don't have to change bits and carry multiple bits on me (which I lose all the time).
by KandEWoodwork
  • Pro
  • Recommended Product
Went through a treated 4x4 easily with a corded drill (DWE1014). I pulled the trigger 5 times for...
Went through a treated 4x4 easily with a corded drill (DWE1014). I pulled the trigger 5 times for each screw and they advanced about 1.2 inches at a time (per second).
by SB
    1 person found this helpful
    Strip very easily
    These screws are worthless. The heads strip VERY easily. Do not even think about driving this without a pilot hole. Even with a pilot hole, I stripped two of them - stuck half way in. Spent 20 minutes extracting with vice grips. POORLY engineered.
    by jjb
      Right screw for the job of joining large lumber (i.e....
      Right screw for the job of joining large lumber (i.e. 4x4's)
      by OSCAR
      • Verified Purchase
      Too expensive for its value. Don't buy these....
      Too expensive for its value. Don't buy these.
      by SANJEEV
      • Verified Purchase
      Rating provided by a verified purchaser...
      Rating provided by a verified purchaser
      by HomeDepotCustomer
      • Verified Purchase
      Rating provided by a verified purchaser...
      Rating provided by a verified purchaser
      by Rick
      • Verified Purchase
      All the Spax stuff is great. I haven’t been disappointed...
      All the Spax stuff is great. I haven’t been disappointed with any spax purchase I’ve ever made. They can be pricier then other brands but they perform exceptionally.
      by BRAD
      • Verified Purchase
      Terrible Lags! The heads strip!
      I purchased these to attach a 4x4 to a 4x4 and really liked the claim about not needing to pre-drill. That's a LIE! I stripped out the heads of three of these pretty quickly and it was a lengthy process to use vice grips to get them back out. Once I started pre-drilling the holes, I had better luck, but still started to strip them. So I returned them and got some more to try and finish the job. This time I pre-drilled all holes and was able to finally get the task done, but these CHEAP lags cost me a LOT of extra time. I also still ended up with one totally stripped - even with the pre-drilling. The next size up uses a larger Torx head and comes with a bit and they worked MUCH better, but I still had some close calls with stripping out the heads. I will NEVER buy this brand again and I strongly suggest that you avoid these at all cost!
      by Rick
        1 person found this helpful
        Drill a little pilot hole to make it a little...
        Drill a little pilot hole to make it a little easier
        by NICK
        • Verified Purchase
        Showing 1-10 of 45 reviews