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Simpson Strong-Tie

Model # BC40Z

Internet # 100375216

Store SKU # 208227

ZMAX Galvanized Half Base

This item has been discontinued.
The Home Depot no longer carries this specific product.

$5.44 /each


Model # BC40Z

Internet # 100375216

Store SKU # 208227

Store SO SKU # 592854

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 offers dual purpose post cap/base for light cap or base applications.

  • 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)
  • Made from 18-Gauge steel
  • ZMAX galvanization offers extra corrosion resistance for exterior and treated-wood applications
  • Install with 16d common nails or #10 x 1-1/2 in. Strong-Drive SD screws

Info & Guides

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Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Base Type 
Regular Base 
Number of Pieces 
Product Weight (lb.) 
0.36 lb 
Warranty / Certifications
Manufacturer Warranty 


Rated 4.1 out of 5 by 16 reviewers.
Rated 5.0 out of 5.0 by 4X4 galvanized base These bases are simply what they are, bases and not to much to say about them. They work for their intended purpose. They are a little of an eye sore for a deck that you are tyring to make look attractive. But again, they work as they are intended. Another thing that I didn't like was the fact that after screwing the bases down the 4X4 rests on top of the screws that secure them to the floor this causes a gap of approx. 1/4" which again causes a little of an eye sore for me. June 9, 2015
Rated 5.0 out of 5.0 by no issues Did what it was supposed to do. Would purchase again. March 30, 2015
Rated 3.0 out of 5.0 by Well made, Well Sized I use these to fasten 4x4s to concrete patios, and they work well. I just wish all these galvanized products weren't so bloody expensive. We need more competition here, guys, to keep you honest! April 8, 2014
Rated 1.0 out of 5.0 by Not sturdy for my purpose I used these to support posts on a deck. The posts were very wobbly. They may not be for that purpose. They do not have the side support. They may be good in concrete to keep the posts in place ,but not for rails or posts that do not have some kind of top anchoring. May 19, 2015
Rated 5.0 out of 5.0 by Made in the USA Simpson is the leader in this field, and they manufacture their products in the USA. Check out their website for an exhaustive product line to solve your connection problems. I am tired of getting stung with inferior products manufactured overseas (aka China) and I will pay a little bit more to support domestic manufacturing AND a superior product. June 24, 2014
Rated 4.0 out of 5.0 by not a Bad product The base is easy to install but a little flimsy..would change how I mounted it if I used again May 6, 2015
Rated 2.0 out of 5.0 by Poor choice, had to get stonger base. No strength, wobbly, not strong enough to do the job. December 30, 2014
Rated 4.0 out of 5.0 by deck corner post used this base bracket on deck corner stabilized it very well i primed and finished it to match deck color. looks really good' March 1, 2014
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