4x4 Post Base Brackets, Carbon Steel, 10-Pack, Black

4x4 post base brackets lock wood posts in place for stable deck, pergola, and railing builds with a clean, matte black finish. This 10-pack features a full-wrap post anchor design to reduce wobble and keep your structure aligned. Built from carbon steel with a corrosion-resistant powder coating, each post base installs fast using pre-drilled holes and the included hardware for wood or concrete mounting.

• Delivers full-wrap support to help prevent post movement and improve stability


• Fits 4x4 standard posts; 3.6" x 3.6" inner size suits 3.5" x 3.5" columns


• Includes 10 post bases plus screws, sleeves, and an open-end spanner for setup


• Installs quickly with pre-set screw holes; drill, align, and fasten in minutes


• Works on wood or concrete for pavilions, porch railings, pergolas, and decks

Get consistent, repeatable support across multiple posts without mixing hardware or guessing fit. These heavy-duty post anchors are sized for common 4x4 builds and designed to hold firm while keeping the base protected with a matte black powder-coated finish. Use them to upgrade new construction or replace worn deck base plates with a more secure, cleaner-looking connection. Grab yours today and keep your next project moving with hardware that installs easily and stays put.

• Quantity: 10 pcs


• Post base outer size (per piece): 3.8 x 5.5 x 6.4 in (96 x 140 x 163 mm)


• Inner size: 3.6 x 3.6 in (91 x 91 mm)


• Recommended post size: 3.5 x 3.5 in


• Material: Carbon steel


• Wall thickness: 0.08 in (2 mm)


• Finish: Powder-coated, matte black


• Net weight (set): 23.8 lb (10.8 kg)


• Accessories: M5*25 dovetail screws (90), M8 open-end spanner (1), M8 serrated sleeves (44), M8*60 self-tapping screws (44)