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Internet # 100375216

Model # BC40Z

Store SKU # 208227

Store SO SKU #592854

BC ZMAX Galvanized Post Base for 4x Nominal Lumber

$6.97
Buy 100 or more $6.27
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Product Details

About This Product

Post and column bases secure the bottom of posts or columns to concrete and are perfect for decks or patio covers. Models are available for attaching to existing hardened concrete, wet concrete, as well as wood. The BC series is for light base applications.

Highlights

  • Provides a positive connection for a post to a wood deck
  • Stronger than angled nailing or screw fastening
  • Reduces the chance of the post splitting and eliminates nailing into end grain
  • Not recommended for non top-supported installations (such as fences or unbraced carports)
  • Nominal post size: 4x
  • Shop all Simpson Strong-Tie here.
  • Return Policy

Product Information

Internet # 100375216

Model # BC40Z

Store SKU # 208227

Store SO SKU #592854

Specifications

Dimensions: H 3.25 in, W 3.56 in, D 2.25 in

Dimensions

Nominal Post Size (in.)

Other

Product Depth (in.)

2.25 in

Product Height (in.)

3.25 in

Product Width (in.)

3.56 in

Details

Base Type

Regular Post Base

Connector Finish

G185 Galvanized

Fasteners Included

Fasteners Not Included

Features

No Additional Features

Gauge

18

Material

Steel

Material Connector Compatibility

Wood to Wood

Number of Pieces

1

Package Quantity

1

Product Weight (lb.)

0.36 lb

Returnable

90-Day

Warranty / Certifications

Manufacturer Warranty

Limited Warranty

Questions & Answers

I’m cutting a 4x4 post even with deck floor and want add a 7’ 4x4 on top of it…what should I use
ByOct 20, 2024
1 Answer | 
Answer This Question

Hi Backdeck, thank you for your message. We want to make sure we address your question. Please contact the Simpson Strong-Tie Customer Service team at 800-999-5099. We look forward to hearing from you.

By|Oct 21, 2024
    0/0


    Will this hold the 4x4 post upright without any other support? Looking for single post to string lights
    BySep 27, 2024
    1 Answer | 
    Answer This Question

    Hi String, thank you for your message. We want to make sure we address your question. The BC40Z do not provide adequate resistance to prevent members from rotating about the base and therefore are not recommended for non-top-supported installations. If you need more information or have additional questions, please contact the Simpson Strong-Tie Customer Service team at 800-999-5099. We look forward to hearing from you.​​

    By|Sep 30, 2024
      0/0


      What fasteners should be used for concrete?
      ByJun 30, 2024
      1 Answer | 
      Answer This Question

      ​Hi Cmmcp, this is Bekah from Simpson Strong-Tie. The BC40Z post base is designed for a wood to wood connection therefore the fasteners we specify with the BC bases are 0.162 x 3 1/2" nails. If using in a concrete application we do not give a fastener specification; that is something that would be up to the Engineer of Record or Building Design Professional to specify for your application. If you need more information or have additional questions, please contact the Simpson Strong-Tie Customer Service team at 800-999-5099. We look forward to hearing from you.

      By|Jul 1, 2024
        0/0


        What hardware would I want to use to attach a 3-ft tall 4x4 to a concrete porch for a stair rail?
        ByJun 24, 2024
        1 Answer | 
        Answer This Question

        Hi MrFixit, this is McKenzie from Simpson Strong-Tie. We want to make sure we address your question. To better assist you, please contact the Simpson Strong-Tie Customer Service team at 800-999-5099. We look forward to hearing from you.

        By|Jun 25, 2024
          0/0


          Can I use this to add a support beam in the basement? It would be used to provide some structural support.
          ByMay 16, 2024
          1 Answer | 
          Answer This Question

          Hi Ronghe, thank you for your message. We want to make sure we address your question, but we need more information, please contact the Simpson Strong-Tie Customer Service team at 800-999-5099. We look forward to hearing from you.​​ - Stacy

          By|May 17, 2024
            0/0


            My 4x6 pressure treated wood (2 2x6 together) doesn?t fit properly in this post base.it?s 3/4 of an inch of space in between.Is there one more compatible
            ByAug 10, 2023
            1 Answer | 
            Answer This Question

            Hello Brad, the BC40Z Post Base is 3-9/16" wide which is sized for sawn cut 4x members(3-1/2"). A double 2x beam would be 3" wide which is what is causing the gap. You can reach out to our customer service team at 800-999-5099 to discuss options on how to fix the gap. -Stacy

            By|Aug 11, 2023
              0/0


              Can this be used on concrete
              ByJul 1, 2023
              1 Answer | 
              Answer This Question

              Hello Fran, The BC40 Post Base can be used on a concrete. If you have any other questions please reach out to SImpsons customer support at 800-999-5099. -Stacy

              By|Mar 9, 2025
                0/0

                (3)

                I am biilding a single privacy panel on one end of a small covered patio. Will be using two 4x4 and Outdoor Accents post base (attaching to comcrete pad) What can I use to attach the top of the post to the patio overhang?
                ByJun 20, 2023
                1 Answer | 
                Answer This Question

                Hey Harry, Ricardo here with Simpson. We offer a variety of hangers and column caps for different applications. In order to understand your connection better and offer a better service, please contact our Technical Support team at 800-999-5099. We look forward to hearing from you.

                By|Sep 3, 2023
                  0/0

                  (1)

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                  Customer Reviews

                  4.4 out of 5

                  • 4.4 out of 493 reviews
                  • 89% recommend this product
                  What Customers Say
                  Summarized by generative AI from text of customer reviews

                  Customers say the Simpson Strong-Tie ZMAX Galvanized Half Base is a reliable and easy-to-install product for securing 4x4 posts in various applications. Many users appreciate its effectiveness in providing stability and support, particularly for deck railings and outdoor projects. However, some customers noted concerns about its strength and sturdiness, suggesting that it may require additional support for heavier applications. Overall, the product is viewed as a good value, though some customers feel the pricing could be more competitive.

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                  Showing 1-10 of 493 reviews
                  I used 2 to replace a 34 year old fence post set in concrete.
                  by
                  • Verified Purchase
                  1 found this review helpful
                  I would recommend these for any 4x4 installation
                  These are perfect for 4x4 and I installed them on you of a brick wall
                  by
                  • Verified Purchase
                  Used the post base to attach 4x4 legs to the...
                  Used the post base to attach 4x4 legs to the pallet couch I built. This provided an extremely firm base to the couch. They accept outdoor paint nicely and provide a finished look!
                  by
                  • Verified Purchase
                  This product made my project very secure and I can...
                  This product made my project very secure and I can rest easy knowing my child is playing safely with this fastener.
                  by
                  • Verified Purchase
                  I put 8 of them for 8 patio solar lights...
                  I put 8 of them for 8 patio solar lights clamping on the patio lattice. I don’t want to ruin my aluminum patio with the screws through.
                  by
                  • Verified Purchase
                  Simple, effective, strong, easy to use. What’s not to love about it??
                  Simple, effective, strong, easy to use. What’s not to love about it??
                  by
                  • Verified Purchase
                  • Recommended
                  2 found this review helpful
                  Bomber...
                  Bomber
                  by
                  • Verified Purchase
                  1 found this review helpful
                  Excellent product does the job will out last me my only dislike a bit heavy on the price.
                  Excellent product does the job will out last me my only dislike a bit heavy on the price.
                  by
                  • Verified Purchase
                  • Recommended
                  1 found this review helpful
                  This customer chose to rate the product and not provide text.
                  by
                  • Verified Purchase
                  Meet my expectations. I would recommend this product.
                  by
                  • Verified Purchase
                  Showing 1-10 of 493 reviews