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Four matte-black carbon-steel post bases with hardware kit

VEVOR

VEVOR QBLZ-6in-4 4-pack post bases 3.6" inner specialty appliance

SKU CH-P057-1FPBA MPN QBLZ-6in-4

Four carbon-steel post bases with 3.6-inch inner size secure 3.5-inch columns using a full-wrap design and include mounting hardware

  • TypeOther Appliances
  • Width6.69
  • Secure wrap design fits 3.5 inch columns with 3.6 inch inner size
  • Carbon steel construction with 2mm wall thickness resists deformation and rust
  • Powder-coated matte black finish protects against corrosion for long outdoor life
  • Complete hardware kit includes 36 Phillips screws and 18 self-tapping screws
  • Four bases weighing 14 lbs total install quickly with included wrench and socket

Post bases for 3.5 inch columns

This four-piece set of carbon-steel post bases fits columns measuring 3.5 by 3.5 inches. Each bracket has an inner dimension of 3.6 by 3.6 inches and a full-wrap structure designed to hold the post securely without wobbling. The matte-black powder coating protects the 0.08 inch thick steel from corrosion and rust. Builders assembling pavilions, deck railings or similar outdoor structures will find the hardware suited to those tasks.

Hardware included for direct mounting

The package supplies 36 Phillips screws, 18 self-tapping screws, 18 serrated sockets and one thin wrench so installation can begin without sourcing extra fasteners. A drill is needed to create pilot holes in the mounting surface before the brackets are bolted down. Each base measures 3.8 by 5.5 by 6.4 inches, providing a stable footprint that transfers load into the supporting structure. The kit frees the installer from buying separate anchor hardware for each post.

Steel thickness resists deformation over time

Carbon steel with a 2 mm wall thickness maintains its shape under continuous vertical load, reducing the chance of gradual bending that lighter gauges might allow. The spray-applied coating remains intact through seasonal moisture cycles, preserving the protective barrier against rust. The combined weight of the four bases is 14 lbs, reflecting the material density that contributes to long-term rigidity. No moving parts or finishes are present that would degrade under sustained compression.

Highlights

  • Secure wrap design fits 3.5 inch columns with 3.6 inch inner size
  • Carbon steel construction with 2mm wall thickness resists deformation and rust
  • Powder-coated matte black finish protects against corrosion for long outdoor life
  • Complete hardware kit includes 36 Phillips screws and 18 self-tapping screws
  • Four bases weighing 14 lbs total install quickly with included wrench and socket

Specifications

TypeOther Appliances
Width6.69

Questions about this item

How much weight do the four carbon-steel bases add to the deck structure?

The complete set weighs 14 lbs (6.35 kg), so each base contributes roughly 3.5 lbs to the overall load.

Do the powder-coated brackets run hot or make noise when left in direct sun all day?

They are passive steel brackets with no moving parts or electronics, so they generate no heat and produce no sound during use.

Which drill bits and drivers are needed to use the included 36 Phillips screws and 18 self-tapping screws?

A standard Phillips bit drives the 36 Phillips screws, while the 18 self-tapping screws require a drill bit sized for the pilot holes plus the same Phillips bit for driving.

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