The Simpson ABU88SS Stainless-Steel Adjustable Standoff Post Base for 8x8 is a Simpson engineered connector built to anchor wooden posts securely to existing concrete in high-capacity structural applications. The 1-in. standoff elevates the post end above the concrete surface to resist moisture-related rot, while the stainless-steel construction provides high and severe corrosion resistance for outdoor, coastal, and weather-exposed installations. Designed for maximum uplift performance, this adjustable post base is a reliable solution for decks, pergolas, covered patios, and structural framing where earthquake or wind loading is a design consideration.

Key Features

• Slotted anchor hole in the base - allows minor positioning adjustments around the anchor bolt, making precise post placement easier even when working around existing concrete layouts
• 1-in. standoff design - elevates the post end above the concrete surface to meet code requirements for structural posts installed in basements or exposed to weather or water splash, helping prevent rot over time
• Increased uplift load capacity - engineered to handle earthquake and wind loading demands, giving builders and contractors confidence in high-stress structural connections
• Stainless-steel material and finish - delivers high and severe corrosion resistance, making this post base well suited for exterior, coastal, and moisture-prone environments where standard hardware would degrade
• Multiple fastener compatibility - attaches to the post with nails, Strong-Drive SD Connector screws, or bolts, offering installation flexibility to match job-site conditions and preferences
• Nominal 8x8 post size - sized specifically for full 8x8 timber framing, ensuring a proper fit for heavy-duty structural post applications

Why This Product

• Built-in standoff protects your investment - the 1-in. standoff keeps the post end clear of concrete and standing moisture, directly reducing the risk of rot at the base of the post and extending the service life of the overall structure
• Adjustability simplifies real-world installation - the slotted base hole accommodates minor anchor bolt offsets, reducing the need for costly corrections when post placement needs to be fine-tuned on site
• Stainless steel rated for demanding environments - constructed entirely from stainless steel, this post base resists corrosion in high-exposure conditions such as coastal settings, wet basements, and areas subject to repeated weather or water splash
• Engineered for high-capacity uplift performance - the ABU88SS is designed to deliver increased uplift loads, making it appropriate for structural applications where seismic or wind resistance is required by code

Specifications

• MPN: ABU88SS
• Brand: Simpson Strong-Tie
• Nominal Post Size: 8x8
• Width: 7 in.
• Length: 7-1/2 in.
• Height: 7 in.
• Material: Stainless Steel
• Finish: Stainless Steel
• Gauge: Base 14; Strap 10
• Install With: Stainless-steel 0.162 in. x 3-1/2 in. nails (sold separately)
• Country of Origin: United States

Frequently Asked Questions

Why does this post base have a built-in standoff?

The 1-in. standoff design elevates the end of the wooden post above the concrete surface, which helps prevent moisture accumulation and rot at the base of the post. This standoff also meets code requirements for structural posts installed in basements or in locations exposed to weather or water splash.

What makes the ABU88SS suitable for high-corrosion environments?

The ABU88SS is constructed entirely from stainless steel, which provides high and severe corrosion resistance. This makes it well suited for outdoor, coastal, or other environments where exposure to moisture or corrosive elements is a concern.

How does the slotted anchor hole help during installation?

The slot in the base provides flexibility around the anchor bolt, allowing for minor positioning adjustments during installation. This makes precise post placement easier, especially when working around existing concrete anchor bolt locations.

What fasteners are used to install the ABU88SS?

This post base is installed with stainless-steel 0.162 in. x 3-1/2 in. nails. It can also be attached to the post using Strong-Drive SD Connector screws or bolts, offering flexibility in fastening methods to suit the application.

Note: Product dimensions may differ from picture.