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Internet # 203770108

Model # 24193

Store SKU # 554001

5/16 in. x 3 in. Steel Hex-Washer-Head Indoor/Outdoor Large Diameter Concrete Anchors (4-Piece)

$6.97
  • Tapcon+ screw anchors for solid concrete, brick and hollow block
  • Tapcon+ concrete screw anchors for beams, columns, conveyors
  • Tapcon+ concrete screw anchors for railings and stadium seating
  • View More Details

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Return this item within 90 days of purchase.

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Product Details

About This Product

Tapcon plus is perfect for projects that demand exceptional holding strength. Tapcon plus screw anchors offer a stronger, quicker, and more convenient masonry anchoring solution. Tapcon plus concrete screw anchors can be installed in half the time of wedge or sleeve anchors and provide 20% greater holding power. Tapcon plus anchors are appropriate for use in concrete, whether indoors or outdoors.

Highlights

  • Works in all masonry-based material including concrete, block or brick
  • More than 2x faster installation than wedge or sleeve anchors
  • Tapcon plus for a variety of projects including attaching machinery/heavy equipment, industrial shelving, ledger board, pipes, cables and many other fixtures to masonry
  • Ideal anchor for heavy-duty installations
  • Climaseal blue coating delivers long-lasting corrosion protection
  • Fast and easy installation: simply drill hole and drive anchor
  • Patented threadform doubles installation speed and delivers 20% more holding power than wedge or sleeve anchors
  • More installation flexibility through closer edge/anchor spacing and easy removability
  • Code recognized for use in uncracked and cracked concrete and for seismic applications
  • Heavy-duty anchor design instills confidence by allowing for closer anchor spacing and closer to edge installation
  • Reputation for quality, strength and ease of installation from industry professionals
  • Tapcon plus concrete anchors are removable after installation
  • Approved for use in ACQ treated lumber
  • Check Out Tapcon's full line
  • Learn more about concrete anchors here.
  • Return Policy

Product Information

Internet # 203770108

Model # 24193

Store SKU # 554001

Specifications

Dimensions

Anchor Diameter (in.)

5/16"

Anchor Length (in.)

3

Details

Drive Style

Hex

Fastener Color

Blue

Fastener Material

Carbon Steel

Fastener Plating

Clear Zinc

Fastener Type

Concrete Screws

Fastening Base Material

Brick, Cinder Block, Concrete

Features

ACQ Rated

Interior/Exterior

Exterior, Interior

Maximum Weight Capacity (lb.)

0

Measurement System

Inches

Package Quantity

4

Returnable

90-Day

Warranty / Certifications

Manufacturer Warranty

ITW Brands warrants that this product is free from defects in material and workmanship. ITW Brands' sole liability for any breach of this warranty shall be to replace this product or refund the purchase price.

Questions & Answers

Do they have this length and diameter in black?
ByAug 1, 2026
1 Answer | 
Answer This Question

Hi there - thank you for contacting us. Unfortunately, Tapcon does not carry these 3/8"x2-1/2" in black color. You can visit our website for all product available. Please feel free to call us at (800)222-6990 or email us at tapcon@itwbrands.com, if you have any questions.

By|Aug 5, 2026


    can these be used to anchor wood framing to concrete? Also, can galvanized bearing plates be used with these?
    ByJul 5, 2026
    1 Answer | 
    Answer This Question

    HI there - thank you for contacting us. Thi screw can indeed be used to anchor wood framing to concrete. Additionally, galvanized bearing plates can be used with these anchors for added support. For more detailed performance data, you can refer to the evaluation report found in our website. Please feel free to call us at (800)222-6990 or email us at tapcon@itwbrands.com, if you have any questions.

    By|Aug 2, 2026

      (2)

      Is the drillbit included with the purchase of the tap Con concrete screws?
      ByJun 16, 2026
      1 Answer | 
      Answer This Question

      Hi there - thank you for contacting us. Unfortunately, the drill bit is not included with the purchase of standard 3/8" x 3". It would have to be purchase individually, correct size for drill bit is 3/8". Please feel free to call us at (800)222-6990 or email us at tapcon@itwbrands.com, if you have any questions.

      By|Aug 17, 2026

        (3)

        Tapcon 3/8 pre drill size
        ByMay 31, 2026
        1 Answer | 
        Answer This Question

        The Tapcon+ 3/8" anchor requires a 3/8" drill bit for the pilot hole and a 9/16" socket to install. Hope this helps.

        By|Aug 2, 2026

          (4)

          What size masonry bit should I use for 1/2" steel anchor
          ByJan 15, 2026
          1 Answer | 
          Answer This Question

          Hi there - thank you for contacting us. For your 1/2" anchor you will need a 1/2" drill bit. Please feel free to call us at (800)222-6990 or email us at tapcon@itwbrands.com, if you have any questions.

          By|Jan 15, 2026


            What size hammer drill bit do you use?
            ByDec 28, 2025
            3 Answers | 
            Answer This Question

            Thank you for contacting us. The 3/8" anchors require a 3/8" drill bit. Tapcon bits are preferred with Tapcon anchors. Hope this helps,

            By|May 29, 2026

              (1)

              Hello Drew, thank you for reaching out. For a 3/8" anchor, a 3/8" drill bit is required. If you have any further questions, please call our hotline. The number is 800-222-6990. Have a great day!

              By|Dec 30, 2025

                Do not use the same size bit as diameter of anchor or it will not secure properly. For a 3/8” diameter anchor use 5/16” bit which is slightly smaller. It will bite.

                By|Aug 13, 2026

                  (4)

                  What size hammer drill bit do you use?
                  ByDec 28, 2025
                  2 Answers | 
                  Answer This Question

                  Thank you for contacting us. The 3/8" anchors require a 3/8" drill bit. Tapcon bits are preferred with Tapcon anchors. Hope this helps,

                  By|Jul 16, 2026

                    Hello Drew, thank you for reaching out. For a 3/8" anchor, a 3/8" drill bit is required. If you have any further questions, please call our hotline. The number is 800-222-6990. Have a great day!

                    By|Jul 2, 2026

                      (1)

                      what size masonry bit do you use for a 5/16" anchor?
                      ByNov 24, 2025
                      3 Answers | 
                      Answer This Question

                      The bit size is indicated on the anchor package. Mike

                      By|May 17, 2026

                      (1)

                      @MIKEDOC your answer is unhelpful. None of the images show the back of the package when shopping online, so you are telling the customer he has to come in the store to know. Perhaps you could go look at the package and tell us the answer.

                      By|Aug 4, 2026

                        (15)

                        Hi there - thank you for contacting us. You can use a 1/4" drill bit for a 5/16" Tapcon anchor. Please feel free to call us at (800)222-6990 or email us at tapcon@itwbrands.com, if you have any questions.

                        By|Jun 28, 2026

                          (6)

                          Viewing 1-8 of 119

                          Customer Reviews

                          4.6 out of 5

                          • 4.6 out of 1,521 reviews
                          • 85% recommend this product
                          Filter by:
                          Showing 1-10 of 1,521 reviews
                          These Tapcon 3/8 in. x 3 in. concrete anchors worked exactly as expected. They were easy to install with the correct pilot hole, threaded smoothly into the concrete, and provided a very secure hold. The hex-washer head made them easy to drive without slipping, and the corrosion-resistant finish is a nice bonus for outdoor use. I used them for a heavy-duty installation, and they have held up well. Just be sure to drill the proper size hole and clean out the dust before installation for the best results. Overall, a reliable, high-quality concrete anchor that I’d definitely buy again.
                          by
                          Response from ITW BrandsJul 29, 2026
                          Hi there, thanks for sharing your positive experience with our Tapcon Concrete Anchors. We work hard to make sure our products are well designed. We’d love to have you tag and follow us on Instagram/Facebook @tapconconcreteanchors, to get a shout out or be the first to know about new products! Plus, you’ll find out about our giveaways and contests.
                          Anchors broke during installation in concrete.
                          by
                          Response from ITW BrandsJul 7, 2026
                          Hi there, thank you for sharing your feedback with us! We are sorry to hear that your experience with our product did not match your expectations. For best results, please use our three-step process: pre-drill a hole using the recommended Tapcon Carbide-tipped drill bit, clean out the hole, and then drive your anchors in. Please feel free to call us at (800)222-6990 or email us at tapcon@itwbrands.com, if you followed these steps and you are still having the same issues.
                          • Verified Purchase
                          I used these Tapcon 1/2 in. x 5 in. steel hex washer‑head concrete anchors to secure the pergola posts in my garden, and I’m very impressed with both the performance and the appearance. Installation was straightforward, just do the pre-drill and then drill in smoothly. Once installed, the anchors held extremely tight in concrete with no movement at all. They feel very solid and give me a lot of confidence that the pergola is properly secured, even in strong winds or bad weather. I also really like the hex washer‑head design—it gives a clean, professional look instead of looking bulky or messy. The steel finish blends well with the pergola hardware and looks great outdoors. Overall, these anchors worked exactly as expected: strong, reliable, and well‑made. If you’re building or anchoring something structural like a pergola post, these are an excellent choice. I would definitely buy them again and recommend them to anyone doing outdoor projects.
                          by
                          Response from ITW BrandsFeb 3, 2026
                          Hi there, thanks for sharing your positive experience with our Tapcon Concrete Anchors. We work hard to make sure our products are well designed. We’d love to have you tag and follow us on Instagram/Facebook @tapconconcreteanchors, to get a shout out or be the first to know about new products! Plus, you’ll find out about our giveaways and contests.
                          Worked as expected and designed. Used to bolt down our pergola on a concrete patio .
                          by
                          Response from ITW BrandsAug 20, 2025
                          Hi there, thanks for sharing your positive experience with our Tapcon Concrete Anchors. We work hard to make sure our products are well designed. We’d love to have you tag and follow us on Instagram/Facebook @tapconconcreteanchors, to get a shout out or be the first to know about new products! Plus, you’ll find out about our giveaways and contests.
                          Buy something else
                          Bought these because the smaller ones would twist off every time. These twist off every time too. I’m drilling the appropriate diameter hole at least a half inch deeper than the screw is long. I tried reeming out the hole too but didn’t make a difference. As soon as the threads catch, these screws shear off. I switched to the hammer-in expansion anchors and those produced a solid anchoring effect. Was putting these in old concrete floor from 1975, trying to anchor base plate for a wall.
                          by
                            • Recommended
                            3 found this review helpful
                            Straight forward pranchor
                            Easy to install, recomend purchase
                            by
                            • Verified Purchase
                            • Recommended
                            Wanted to make sure the hose reel would be secure...
                            Wanted to make sure the hose reel would be secure and these anchors were perfect.
                            by
                            • Verified Purchase
                            1 found this review helpful
                            Solid!
                            Very easy to install after drilling with proper masonry bit to secure the 4x4 tie. Hasn't budged and is working well.
                            by
                              • Recommended
                              Worked great securing my pergola hardware to our concrete pad....
                              Worked great securing my pergola hardware to our concrete pad. Very heavy duty. Time will tell but we are currently happy with the product.
                              by
                              • Verified Purchase
                              I'm apparently so manly...
                              That I can sheer cement anchors with my bare hands! Hulk smash. How the heck am I gonna get these out? This should be real fun. Pure garbage. All sheered at same spot. 3/8 are good...somehow 16th of an inch makes all the difference.
                              by
                                4 found this review helpful
                                Showing 1-10 of 1,521 reviews

                                Compare Key Features

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                                Product Snapshot

                                Ideal for heavy-duty installations in masonry, offering 20% more holding power and faster installation than wedge anchors.
                                Ideal for pros and DIYers who need corrosion-resistant concrete anchors for strong, easy installations in various masonry materials.
                                Ideal for pros and DIYers seeking corrosion-resistant concrete anchors for secure and easy masonry installations.
                                Ideal for heavy-duty concrete anchoring with superior corrosion resistance and easy installation using a 5/32 in. carbide-tipped drill bit.

                                Load Capacity

                                0 lb
                                0 lb
                                0 lb

                                Corrosion Resistance

                                Diameter

                                5/16 in.
                                0.25 in.
                                0.25 in.
                                3/16 in.

                                Length

                                3 in.
                                1.25 in.
                                3.25 in.
                                2.75 in.

                                Head Type

                                Hex
                                Hex-Washer
                                Hex Washer
                                Hex-Washer