ABU44Z Post Base – Galvanized for 4x4 S4S / RS

  • ABU44Z Galvanized Adjustable 4x4 Post Base – S4S / RS – Wood to Concrete
  • ABU44Z Diagram
  • ABU44Z Installed
$31.95

This item can be returned within 30 days. Return Policy.

Product Overview

Simpson Strong-Tie
SKU:
PB-S4S/RS-4x4-ABU-ZMAX
UPC:
044315936401
MPN:
ABU44Z
Nominal Post Size Fit:
4x4 S4S / RS   
Material Gauge:
Base: 16 ga Strap: 12 ga
Base Width (W):
3 9/16"
Base Length (L):
3"
Base Height (H):
5 1/2"
Standoff Height (HB):
1 3/4"
Download Capacity (lbs):
7,570 lbs
Finish / Coating:
Galvanized / ZMAX
Spec Sheet (MFR):
  ABU Post Base
Product Specs (MFR):
ABU Post Base   
Installation Specs (MFR):
Nail or Bolt   

Description

Model: ABU44Z — Designed for 4x4 S4S or Rough Sawn (RS) lumber. Not compatible with Timber Build's TR Finish.

The ABU44Z galvanized adjustable post base is a high-capacity connector designed to secure 4x4 posts to existing concrete surfaces in decks, patios, and structural applications. Featuring a 1″ standoff, this base helps protect against rot by elevating the post above moisture-prone surfaces.

Its slotted anchor hole allows for precise lateral adjustment, and it installs easily using nails, Strong-Drive® SD Connector screws, or bolts. The ABU44Z meets code requirements for posts exposed to weather or splash and is engineered to perform under high uplift loads—ideal for regions with seismic or wind concerns.

Manufacturing Notes: Part of the Simpson Strong-Tie ABU series, this adjustable post base is designed for maximum uplift performance and long-term durability. ZMAX® galvanized coating adds extra protection in outdoor or wet applications.

Key Features:

  • 1″ standoff helps reduce post-end decay and meets code for exposed applications
  • Slotted base provides flexibility for anchor bolt alignment and easier post placement
  • Rated for increased uplift resistance in seismic and high-wind conditions
  • Compatible with S4S and RS finish posts
  • Galvanized with ZMAX® coating for added corrosion resistance

Common uses:

  • Deck posts and columns
  • Porch railings and columns
  • Small 4x4 pergolas and gazebos
  • Mailbox posts
  • Fence posts and gate columns

Authorized Dealer Notice: Timber Build is an authorized dealer of Simpson Strong-Tie products, offering structural connectors, anchors, fasteners, and deck/roof hardware. If you're looking for a specific product that is not currently listed on our website, please give us a call—we can source everything you need directly from Simpson Strong-Tie.

To explore the full catalog, visit Simpson Strong-Tie’s website.

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   Customization   

Can't find what you are looking for?
Since we do all our manufacturing in-house, we have endless flexibility regarding Custom Work.

  • Adjust the size of any of our products
  • Modify the design of our products
  • Work from your plans or hand-drawn sketches
  • Build products using any Wood Species