1/4 in. x 3-1/2 in. Interior Washer Head Structural Wood Lag Screws Powerlags Torx T-Star (12 Each) Bit Included
- 40% Lower driving torque with patented serrated cutting threads
- No pre-drilling needed with heat treated 4CUT point technology
- Great for heavy duty interior structural applications and support
- View More Details
Free & Easy Returns In Store or Online
Return this item within 90 days of purchase.
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Product Details
About This Product
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. SPAX is your trusted partner for your fastening needs. Do it Once, Do it Right with SPAX.
Highlights
- 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
- Ideal replacement for the conventional lag. IRC/IBC Code Compliant: TER-No. 1912-10
- 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
- T-Star 6-lobe design is compatible with all industry standard bits and provides superior bit engagement
- Engineered and manufactured
- SPAX 1/4-in. powerLags require a T-star driver bit: T-30 Bit
- Common applications: deck ledger attachment, structural wood to wood connections
- Bit included
- Return Policy
Product Information
Specifications
Dimensions
Screw Length | 3-1/2 in |
|---|---|
Size | 1/4 in |
Details
Drive Style | Torx |
|---|---|
Fastener Color | Brass |
Fastener Material | Carbon Steel |
Fastener Plating | Yellow Zinc |
Fastener Type | Structural Screws |
Features | Self Tapping |
Head Style | Washer Head |
Interior/Exterior | Interior |
Measurement System | Inches |
Package Quantity | 12 |
Product Weight (lb.) | 0.0342 lb |
Returnable | 90-Day |
Thread Style | Serrated Thread |
Warranty / Certifications
Manufacturer Warranty | For warranty information on this product, please call the Customer Service Center at 1-800-435-4654. |
|---|
Questions & Answers
what is the head diameter of the 1/4 x 3 screw.
The head size is 0.697". Let us know if you need any additional help with your project. We are here to help! ~SPAX Team~
What is the diameter of the washer head?
Hello, the head is .697" diameter. Thank you, SPAX US
Can these be used with pressure treated wood?
The Yellow Zinc coating is recommended for interior applications. For pressure treated wood, please us the HCR coating as it is engineered for exterior applications and treated lumber. Thank you for being a SPAX customer.
What is the diameter of the head?
Hello, the head diameter is 0.697". - SPAX US
Can these be used to fasten exterior sheathing which will be beneath the rain screen
We recommend using SPAX exterior fasteners if they will be exposed to weather or wet spaces.
Can these screws be used for a dicore basement system to try and pernitrate the concrete for hanging cabinets?
Hello, Thank you for reaching out. SPAX PowerLag fasteners are not recommended for attaching into concrete. Kind regards, SPAX U.S.
what is the pull out force thru 4" of SPF?
Hello, Please see engineering values below, values can be found on last page: https://spax.us/uploads/resources/PWLG-TSTAR-WH-YZ-Spec-pg.pdf
how deep do these need to penetrate the board behind the ledger to be effective?
Hello, Understanding this is not the exact correct application that you're doing: In ICC Report, Table R507.9.1.3(1) Deck Ledger Connection to Band Joist, the foot notes state that for a lag screw to function as designed, the tip of the lag screw shall fully extend beyond the inside face of the band joist. Please contact us directly for more information. Thank you for being a SPAX customer! SPAX U.S.
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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.
