Simpson OCB44 4x4 Ornamental Column Base - Flat Black Powder Coat

The Simpson Strong-Tie OCB44 Ornamental Column Base is a cast-in-place column base engineered to prevent wood members from rotating at their base connection. Designed for 4x4 posts, this connector features a precision-engineered base plate intended to sit flush with the concrete surface, creating a clean, low-profile installation. The OCB44 is finished in a flat black powder-coated coating that delivers a significantly more durable and visually refined appearance than standard paint finishes, making it equally at home in structural and decorative applications.

Key Features

• Cast-in-Place Design: Base plate installs flush with the concrete surface for a clean, finished appearance
• Rotation Prevention: Engineered geometry helps prevent wood post members from rotating at the base connection
• Flat Black Powder-Coated Finish: Produces a more durable and better-looking finish than standard paint
• Heavy-Duty Gauge: Constructed from 3-gauge material for robust structural performance
• Wind & Seismic Rated: Allowable loads increased 60% for wind or earthquake loading
• Made in the USA: Manufactured domestically for consistent quality standards

Specifications

• Attribute: Detail
• Model Number: OCB44
• Gauge: 3
• W1: 3 9/16 in.
• W2: 3 1/2 in.
• Coating / Material: Powder Coating, Black
• Country of Origin: United States

Approved Applications

• Cast-in-place post base connections for 4x4 wood members
• Structural column base installations requiring flush concrete mounting
• Applications requiring wind and seismic load resistance (60% load increase allowable)
• Decorative and ornamental post installations where finish appearance matters
• Outdoor structures including pergolas, arbors, porches, and similar assemblies

Installation Notes

• Required Fasteners: (2) 5/8" Machine Bolts
• Install all models with the bottom of the base plate flush with concrete
• Minimum side cover for full loads is 3" for CBs
• Allowable loads have been increased 60% for wind or earthquake loading. No further increase allowed; reduce where other loads govern.

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

Frequently Asked Questions

What post size is the OCB44 designed to fit?

The OCB44 is designed specifically for 4x4 wood post members. The connector dimensions include a W1 of 3 9/16 in. and a W2 of 3 1/2 in. to accommodate standard 4x4 lumber.

How does the OCB44 install relative to the concrete surface?

The OCB44 is a cast-in-place column base, meaning the base plate is installed flush with the concrete surface. This creates a clean, low-profile appearance suitable for both structural and decorative applications.

What finish is applied to the OCB44, and how durable is it?

The OCB44 features a flat black powder-coated finish. This coating is described as producing a more durable and better-looking result than standard paint finishes, making it appropriate for applications where appearance matters alongside structural performance.

Is the OCB44 rated for wind and seismic loading?

Yes, the OCB44 is wind and seismic rated. Its allowable loads are increased by 60% for wind or earthquake loading conditions, making it suitable for installations in areas subject to these forces.