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Internet # 315162852

Model # 4101010400604

Store SKU # 1006213470

#8 x 2-1/2 in. Interior Flat Head Wood Screws Construction Phillips Square Unidrive (133 Each) 1 LB Bit Included

  • 2-1/2" Premium Interior Screw - includes 133 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. U.S made SPAX is your trusted partner for your fastening needs. Do it Once, Do it Right with SPAX.


  • 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.
  • No required pre-drilling in wood. Be more efficient on the job by eliminating time consuming steps with self drilling SPAX UNIQUE 4CUT POINT technology.
  • Patented MULTIhead countersinks the screw head flush in wood. Keep a smooth surface on your project for greater design and functional qualities.
  • Unidrive is a (Phillips/Square combo) drive system for the SPAX fastener. The user has the option of using a Phillips drive bit, a square drive bit for installation or a Unidrive SPAX bit (#8 and #10 only).
  • 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.
  • TER no. 2010-02 multi-purpose fastener properties report
  • Common applications: general projects where zinc coating is acceptable, hinge installation, wood crafts, cabinet frames
  • Bit included
  • Return Policy

Product Information

Internet # 315162852

Model # 4101010400604

Store SKU # 1006213470

Additional Resources

Shop All SPAX



Screw Length

2-1/2 in



Thread Pitch (mm)

2.4 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 I use this product on pressure treated wood
by|Mar 1, 2023
1 Answer
Answer This Question

A:  Hello, Zinc coating is not recommended for use in pressure treated wood. SPAX suggests use of their HCR-X coated fasteners in this application. Thanks, SPAX US

by|Mar 2, 2023
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    Customer Reviews

    4 out of 5

    • 4 out of 102 reviews
    • 0% recommend this product
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    Showing 1-10 of 102 reviews
    They worked welled for the project I was working on. The free bit that came in the box was a great surprise.
    • Verified Purchase
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    Performed as expected. Went through plywood easily and secured the floor well.
    • Verified Purchase
    • Verified Purchase
    Excellent screws to work with and very good quality am very satisfied with this product.
    • Verified Purchase
    Great deal on large quantity of quality wood screws. ?
    • Verified Purchase
    These worked perfectly for the project i was working on.
    • Verified Purchase
    • Verified Purchase
    These worked great for the project i was doing.
    • Verified Purchase
    • Verified Purchase
    Showing 1-10 of 102 reviews