#1 Home Improvement Retailer

Internet # 203533402

Model # 100101

Store SKU # 489745

Store SO SKU # 1001005824

#9 x 2-1/2 in. Star Drive Torx Bugle Head R4 Multi-Purpose Wood Screw (300-Pack)

Apply Now
Pay $11.28 after $25 OFF your total qualifying purchase upon opening a new card. info
Apply for a Home Depot Consumer Card
  • Faster Drive for Improved Productivity
  • Fast Bite Tip provides a fast start for one-step installation
  • For interior / exterior use
  • View More Details
0 in stock
Free & Easy Returns In Store or Online
Return this item within 90 days of purchase. Read Return Policy
Product Details

About This Product

GRKs R4 Multi-Purpose Framing Screw has 6 self-contained cutting pockets which act like a router and transport the drill dust away from the edge of the screw hole. They also widen the countersink hole only around the head shape. The screw head top closes the hole exactly, leaving no damaged fibers around the wider area of the head.


  • For use in wood, particle-board, cement fiberboard, plastic, sheet metal
  • Star drive eliminates stripping for improved productivity
  • Zip-Tip allows for no-pre-drilling and 1 step application
  • Self-tapping
  • No pre-drilling
  • No stripped heads
  • Common project applications: remodeling, fencing, storage, cabinets, framing
  • Return Policy

Product Information

Internet # 203533402

Model # 100101

Store SKU # 489745

Store SO SKU #1001005824



Screw Length2-1/2 inSize#9
Thread Pitch (mm)2.2 mmThreads Per Inch (TPI)11.5


Drive StyleTorxFastener ColorBrass
Fastener MaterialCarbon SteelFastener PlatingPolymer
Fastener TypeWood ScrewFeaturesACQ Rated, Self Tapping
Head StyleBugle HeadIncludedDriver Bit
Interior/ExteriorExterior, InteriorMaterials FastenedWood to Wood
Measurement StandardSAEPackage Quantity300
Product Weight (lb.)0.0121 lbReturnable90-Day
Thread StyleW-Cut Thread

Warranty / Certifications

Manufacturer WarrantyNo

Questions & Answers

Q:Can these be used for joist hangers on a deck?
by|Nov 17, 2023
1 Answer
Answer This Question

A:  Hi Leonardo! We typically recommend our RSS screws for structural builds due to the stronger holding power and they were designed for structural builds. Please feel free to call us at (877) 489-2726 or email us at CS@itwbrands.com. There we will gather the necessary specs to recommend the product you will need.

by|Feb 18, 2024
    Q:Can these screws be used for Hardi plank
    by|Oct 2, 2023
    1 Answer
    Answer This Question

    A:  Hi, I'm Andrew from GRK. The GRK R4 Multi-Purpose screws can be used in this specified application. Please ensure the appropriate size and length of the R4 screw.

    by|Nov 13, 2023
      Q:Are these screws compatible with HardieTrim (fiber cement) trim boards?
      by|Sep 14, 2023
      1 Answer
      Answer This Question

      A:  Hello, I'm Andrew from GRK. The GRK R4 multi-purpose screws can be used with fiber cement boards.

      by|Sep 15, 2023
        by|Aug 29, 2023
        0 Answer
        Answer This Question
        Showing 1-4 of 117

        Customer Reviews

        4.9 out of 5
        • 4.9 out of 2,630 reviews
        • 96% recommend this product
        Filter by:
        Showing 1-10 of 2,630 reviews
        Southern Sweeps
        Southern Sweeps uses these screws to fasten the firebox to the stud wall when installing the fireplace. looks the fireplace in secure.
          • Recommended
          The absolute best screw for structural framing. The self starter tip will eat into pine easy and the star bit imprint is deep so that the star bit will not strip it out. Great for impact guns. Nearly a 1000 lb sheer force with the screw. You can’t go wrong if you build it strong. Get these to do it right.
          • Verified Purchase
          I got Significantly less than I paid for
          I got this online and the package was open and less than half full.
            Not sure why everyone loves them.
            Using these for screwing down Advantech subfloor and these screws are NOT self starting. Almost all of them gave me a very hard time starting. I think it may be an issue with the batch because the picture of where the self starting part is does not match the screws I have. The self starting slot is too high on the screws I have so they just don't
              NOT suitable for exterior. Mine are all rusting.
              25 months ago, in NY, I constructed in PT lumber some outdoor stairs. Removing stairs now and here are the first 14 (not cherry-picked) screws. This is 25 months. 1/14 shows no sign of corrosion. 13/14 showing corrosion, one with severe (threads already starting to "melt"). Note I used GRK from two batches; it was not a bad lot. Hugely disappointed. Will continue using the screws I have only for interior shelving, basement framing, etc. Absolutely not up to the task outdoors.
                6 found this review helpful
                A no brainer
                These are the best for any project. Saves time and frustration.
                • Verified Purchase
                • Recommended
                • Verified Purchase
                Work as advertised!
                I used the included drill bit and have fastened about 160 of these babies into wood fence posts. Not one screw has stripped, and the self-tap works well. Very pleased with the quality.
                • Verified Purchase
                • Recommended
                Excellent, used to attach furring strips
                We used these to go through the furring strips and then the exterior insulation and the OSB and then into a stud. they have great grab and are strong.
                  Grk screw containers clip into the rail system from rail mounted hardware bins, see photo
                    • Recommended
                    Showing 1-10 of 2,630 reviews