The Simpson 6X Post Base, G90 Galvanized BC60 is an 18-gauge steel post base from Simpson built to secure the bottom of 6x posts or columns to concrete - making it a dependable choice for decks, patio covers, and other light base connection applications. Its G90 galvanized zinc finish delivers added corrosion resistance, and its positive mechanical connection is engineered to outperform angled nailing or screw fastening where a reliable, long-lasting post anchor is required.

Key Features

• Provides a positive connection for a post to a wood deck - creates a secure, mechanical attachment point that holds the post firmly in place rather than relying on friction or gravity alone.
• Stronger than angled nailing or screw fastening - gives builders and contractors a structurally superior alternative to traditional fastening methods, improving overall connection integrity.
• Reduces the chance of the post splitting and eliminates nailing into end grain - protects the structural member from damage during installation and avoids the weaker holding power of end-grain fastening.
• Made from 18-gauge steel - provides solid, consistent performance in light post base applications where a dependable structural connector is needed.
• Galvanized (G90) for extra corrosion resistance - the zinc G90 coating helps the base hold up in outdoor environments where exposure to moisture is a regular concern.
• Nominal post size: 6x - engineered specifically for standard 6x lumber, ensuring a proper fit without guesswork or modification.
• Not recommended for non top-supported installations (such as fences or unbraced carports) - knowing the correct application upfront helps buyers select the right connector and avoid installation errors.

Why This Product

• A stronger, safer post connection for decks and patio covers - by replacing angled nailing and end-grain fastening with a positive mechanical hold, this post base improves the structural reliability of 6x post installations in common outdoor building projects.
• Built for outdoor durability from the start - the G90 galvanized zinc finish is applied at the manufacturing stage, meaning the corrosion protection is built into the connector itself rather than added as an afterthought, helping it stand up to the conditions typical of deck and patio construction.
• Reduces splitting risk during and after installation - the bracket design keeps fasteners out of the post's end grain, which protects the wood member from cracking and helps maintain the strength of the connection over time.
• Made in the United States to Simpson specifications - domestic production under the quality standards Simpson is known for means builders can count on consistent dimensions and material integrity for 6x post base applications.

Specifications

• MPN: BC60
• Brand: Simpson Strong-Tie
• Member Size: 6x
• Width 1: 5-1/2 in.
• Length 1: 5-1/2 in.
• Height 1: 3 in.
• Gauge: 18
• Coating: Zinc Galvanized, G90
• Finish: Zinc Galvanized, G90
• Install With: Install with 16d commons or 16d x 2 1/2" joist hanger nails (sold separately)
• Post Flange Fasteners: (6) 0.162 x 3-1/2" Nails
• Base Bottom Fasteners: (4) 0.162 x 3-1/2" Nails
• Country of Origin: United States

Approved Applications

• Securing posts or columns to concrete for decks
• Securing posts or columns to concrete for patio covers
• Light base connection applications
• Top-supported post installations where lateral rotation resistance is provided by the structure above

Downloads and Resources

• View Spec Sheet

Frequently Asked Questions

What post size is the BC60 designed to fit?

The BC60 is designed for nominal 6x post sizes, making it the appropriate choice for standard 6x lumber used in decks, patio covers, and similar light structural applications.

Why is the BC60 a better choice than angled nailing or screw fastening?

The BC60 provides a stronger, more positive mechanical connection between the post and the deck or concrete surface. It also reduces the chance of the post splitting and eliminates the need to nail into end grain, which is a weaker and less reliable fastening method.

Can the BC60 be used for fences or unbraced carports?

No. The BC60 is not recommended for non top-supported installations such as fences or unbraced carports. Post bases in the BC series do not provide adequate resistance to prevent members from rotating about the base and require the post to be stabilized from above.

What fasteners should be used to install the BC60?

The BC60 should be installed with 16d commons or 16d x 2 1/2" joist hanger nails. Use all specified fasteners as directed - post flange requires (6) 0.162 x 3-1/2" nails and the base bottom requires (4) 0.162 x 3-1/2" nails. Do not install bolts into pilot holes.

Note: Product dimensions and/or nail or screw holes may differ from picture.