The Simpson BC80 BC Galvanized Post Base for 8x from Simpson is an 18-gauge steel post base designed to anchor the bottom of nominal 8x posts or columns securely to a wood deck, delivering a positive mechanical connection that outperforms angled nailing or screw fastening. With a G90 zinc galvanized finish for enhanced corrosion resistance, this post base is built for light base applications such as decks and patio covers where a reliable, lasting connection between post and structure is essential.

Key Features

• Positive post-to-deck connection - creates a firm mechanical bond between the post and wood deck, eliminating the weak points associated with toenailing or screw-only fastening methods.
• Stronger than angled nailing or screw fastening - gives builders and homeowners greater structural confidence at the post base, especially on decks and patio covers carrying significant loads.
• Reduces the chance of post splitting and eliminates nailing into end grain - protects the integrity of the post over time, reducing the risk of cracking or long-term structural degradation at the connection point.
• 18-gauge steel construction - provides a sturdy, purpose-built form factor sized specifically for nominal 8x posts, balancing strength with a light base application profile.
• G90 zinc galvanized finish - offers extra corrosion resistance compared to standard galvanized coatings, making the BC80 well suited for outdoor environments exposed to moisture and weather.
• Installs with 16d common nails or 16d x 2 1/2 in. joist hanger nails - compatible with widely available fastener types, keeping installation straightforward for contractors and experienced DIYers alike.
• Not recommended for non top-supported installations such as fences or unbraced carports - helps buyers confirm correct application upfront, ensuring the connector is used where it performs as intended.

Why This Product

• A mechanically superior alternative to toenailing - the BC80 replaces angled nailing and screw fastening with a positive mechanical connection, reducing the structural vulnerabilities that come with fastening into end grain on large 8x posts.
• Purpose-built corrosion resistance for outdoor use - the G90 zinc galvanized coating goes beyond standard galvanizing, making this post base a dependable choice for decks, patio covers, and other exterior applications where moisture exposure is a routine concern.
• Engineered specifically for nominal 8x post sizes - rather than adapting a smaller base to a larger post, the BC80 is sized and rated for 8x framing members, ensuring a proper fit and full load performance at the connection.
• Trusted Simpson engineering for light base applications - designed by a widely recognized name in structural connectors, the BC80 brings proven fastening geometry to deck and patio cover construction, giving contractors and builders a connector they can specify with confidence.

Specifications

• MPN: BC80
• Nominal Post Size: 8x
• Gauge: 18
• Width 1: 7 1/2 in.
• Length 1: 7 1/2 in.
• Height 1: 4 in.
• Coating / Finish: Zinc Galvanized, G90
• Fasteners Required - Post Flange: (6) 0.162 x 3-1/2" Nails (sold separately)
• Fasteners Required - Base Bottom: (4) 0.162 x 3-1/2" Nails (sold separately)
• Install With: 16d commons or 16d x 2 1/2" joist hanger nails (sold separately)
• Country of Origin: United States

Downloads and Resources

• View Spec Sheet

Frequently Asked Questions

What size post is the BC80 designed to fit?

The BC80 is designed for a nominal 8x post size, making it suitable for larger structural posts used in decks, patio covers, and similar light-base applications.

What type of corrosion protection does the BC80 have?

The BC80 features a G90 zinc galvanized finish, which provides extra corrosion resistance compared to standard galvanized coatings, making it well suited for outdoor applications.

Can the BC80 be used for fence posts or unbraced carports?

No. The BC80 is not recommended for non top-supported installations such as fences or unbraced carports. It is intended for applications where the post is supported from the top, such as decks and patio covers.

Why is the BC80 a better fastening method than angled nailing?

The BC80 provides a positive mechanical connection that is stronger than angled nailing or screw fastening. Its opposing nail pattern reduces the chance of the post splitting and eliminates the need to nail into end grain, which can compromise structural integrity over time.

Note: Product dimensions and/or nail or screw holes may differ from picture. Please see item description for specifications.