6x6 Post Base Brackets, 2-Pack Carbon Steel, Black

6x6 post base brackets lock wood posts in place for stable deck, pergola, and railing support with less wobble. This 2-pack heavy-duty post base set fits common 6x6 and 5.5x5.5 posts, using a carbon steel sleeve and powder-coated finish for corrosion resistance. Designed for quick, clean installs on concrete or wood, each base includes a cover plate for a finished look on patios, porches, and pavilions.

• Fits common posts: inner 5.9 x 5.55 in supports 6 x 5.5, 5.5 x 5.5, and 5.8 x 5.5 in wood posts.


• Delivers steady support: 2 mm wall carbon steel helps reduce movement for railings, columns, and decking posts.


• Resists weathering: powder-coated surface helps protect against rust and corrosion outdoors.


• Includes full hardware: self-tapping screws, expansion screws, washers, nuts, wrench, and support brackets for install.


• Installs fast: align, drill, and bolt down using pre-made screw holes for time-saving assembly.

Whether you’re building a porch railing, pergola, pavilion, or deck post support, these post anchors are built for a secure hold and a cleaner finish thanks to the cover plate. Use them on multiple surfaces including concrete and wood to keep posts aligned and protected at the base. Set up your frame with confidence and keep your project moving—grab yours today and get your structure ready for the next step.

• Quantity: 2 pcs


• External dimensions: 5.9 x 5.7 in (150 x 145 mm)


• Internal dimensions: 5.9 x 5.55 in (150 x 141 mm)


• Overall product dimensions: 5.91 x 5.71 x 6.18 in (150 x 145 x 157 mm)


• Material: carbon steel


• Wall thickness: 2 mm (0.08 in)


• Finish: powder-coated, black


• Net weight (set): 8.93 lb (4.05 kg)


• Hardware: M8*60 self-tapping screws, φ12*60 expansion screws, M8 washers, 1/4 in x 80 wood screws, through-hole nuts, open-end wrench, square large washers, support brackets