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Internet # 315169591

Model # 4191020500904

Store SKU # 1006213618

#10 x 3-1/2 in. Interior Flat Head Wood Screws Construction Framing Torx T-Star Plus (57 Each) 1 LB Bit Included

  • 3-1/2" Premium Interior Screw - includes 57 pieces
  • No pre-drilling needed with heat treated 4CUT point technology
  • Secure fastening in wood, concrete, masonry, metal or plastic
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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. This high performance wood screw is not your average screw. While it is designed for wood applications it is also functional for other materials like masonry, drywall, plastic and up to 24ga steel. Masonry and Concrete do require pre-drilling. It is made with carbon steel and coated for durability to fasten strongly and securely. 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, easier to install, and reduces splitting in wood. Let the SPAX FACTOR take some of the hassle out of your next project
  • No Predrilling in Wood! Unique 4Cut Point design provides a self-drilling feature to prevent splitting in hardwood
  • T-Star plus drive provides superior bit engagement. Better bit engagement means quicker installation with less effort. Conveniently allows for one-hand overhead driving
  • Patented MULTIhead countersinks the screw head flush in wood
  • Stay Stronger for Longer! Heat Treated Grade 5 Durability. Tested under the toughest scenarios to give you confidence in every connection
  • Requires a T-20+ bit - Included in box
  • Common applications: Cabinet frames, hinge installation, indoor furniture, other general applications where yellow zinc coating is acceptable
  • Engineered and manufactured in the USA
  • TER No. 2010-02 - Multi Purpose Fastener Properties Report
  • Return Policy

Product Information

Internet # 315169591

Model # 4191020500904

Store SKU # 1006213618

Additional Resources

Shop All SPAX



Screw Length

3-1/2 in



Thread Pitch (mm)

3 mm

Threads Per Inch (TPI)



Drive Style


Fastener Color


Fastener Material

Carbon Steel

Fastener Type

Wood Screw


Self Tapping

Head Style

Flat Head


Driver Bit, Screw



Materials Fastened


Measurement System


Package Quantity


Product Weight (lb.)

1 lb



Thread Style

Coarse Thread

Warranty / Certifications

Manufacturer Warranty

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

Questions & Answers

Q:can this screws use for sheathing plywood lay on OSB subfloor?
by|Apr 28, 2024
1 Answer
Answer This Question

A:  Hello, Typically we suggest using a 2" minimum length fastener. Depending on your layers, it is recommended to have 1.25" penetration into the joist. - SPAX US

by|May 1, 2024
    Q:Is this 1 lb box? So hard to find the larger boxes!
    by|Feb 17, 2024
    1 Answer
    Answer This Question

    A:  Hello, Yes that is a 1# box. Apologies that there is no larger box in our set for this product. SPAX US

    by|Feb 19, 2024
      Q:What is the sheer strength of this screw?
      by|Jan 21, 2024
      1 Answer
      Answer This Question

      A:  Hello, the shear value of the #8 screw is 345 pounds. *Shear strength is determined in accordance with AISI S904 using minor thread diameter when fastener is tested in threaded section. Please also note, that is the value of the screw only, shear value of connection may be different based on wood or connector values. -SPAX US

      by|Jan 24, 2024
        Q:What is the required he size to mount in concrete?
        by|Jan 25, 2023
        0 Answer
        Answer This Question
        Showing 1-4 of 5

        Customer Reviews

        4.7 out of 5

        • 4.7 out of 222 reviews
        • 82% recommend this product
        Filter by:
        Showing 1-10 of 222 reviews
        This is the only screw I ever use if possible.
        • Verified Purchase
        Very easy to install and the hex head help with securing wood to the deck with easier and stronger hold.
        • Verified Purchase
        I love this kind of screws, compared to other brands, it’s more slim, so won’t crack the wood, it even works good outdoors, I love this brand
        • Verified Purchase
        • Verified Purchase
        Bit p rovided was of poo quality. Luckly I had another T20 bit.
        • Verified Purchase
        • Verified Purchase
        Strong, they worked excellent for the job I needed
        • Verified Purchase
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        Showing 1-10 of 222 reviews