Simpson Strong Tie RFB 5/8 in. x 16 in. Galvanized Retrofit Bolt

Description

Product Overview

The Simpson Strong Tie RFB retrofit bolt is a premium structural fastener designed to meet the rigorous demands of modern construction. Constructed from high‑grade alloy steel, the bolt undergoes a hot‑dip galvanizing process that creates a thick, uniform protective coating, ensuring long‑term resistance to moisture, chemicals, and atmospheric corrosion. With a 5/8‑inch diameter and a 16‑inch length, this bolt provides a substantial shear capacity of up to 12,000 pounds, making it suitable for heavy‑duty applications such as beam‑to‑column connections, joist‑to‑girder assemblies, and retrofit reinforcement of existing structures. The hex head design offers a secure, torque‑friendly interface for standard wrenches and impact tools, facilitating quick and accurate installation on site.

Beyond its mechanical strength, the RFB bolt incorporates a coarse UNC thread profile that enhances grip and reduces the risk of thread stripping under high load conditions. The included washer, sized to match the bolt diameter, distributes bearing pressure evenly across the connected material, preventing localized deformation and extending the service life of the joint. This combination of material quality, protective finish, and thoughtful design details makes the RFB bolt a reliable choice for engineers, contractors, and DIY enthusiasts seeking a fastener that delivers both performance and durability.

In addition to its structural capabilities, the bolt complies with industry standards for safety and quality, including ASTM specifications for Grade 2 fasteners. Its dimensions are precisely machined to ensure consistent fitment across a wide range of steel, wood, and composite substrates. The product is packaged individually, allowing for easy inventory management and precise ordering for projects of any scale. Whether used in new construction, seismic retrofitting, or routine maintenance, the Simpson Strong Tie RFB bolt provides the confidence that connections will hold firm under both static and dynamic loads.

Manufactured by Simpson Strong‑Tie, a recognized leader in structural fastening solutions, the RFB bolt benefits from the company’s extensive research and development resources. Continuous testing and field feedback have refined the bolt’s design to optimize load transfer efficiency while minimizing installation time. The brand’s commitment to quality assurance is reflected in rigorous production controls, ensuring each bolt meets exacting performance criteria before it reaches the market.

Overall, the RFB retrofit bolt represents a blend of engineering excellence and practical functionality. Its robust construction, corrosion‑resistant coating, and user‑friendly features make it an ideal component for a variety of structural applications, from commercial high‑rise projects to residential home upgrades. By selecting this bolt, professionals can achieve reliable, long‑lasting connections that meet or exceed code requirements, ultimately contributing to the safety and longevity of the built environment.

Usage

The RFB retrofit bolt excels in environments where both tensile and shear forces are present, such as in steel framing, timber‑to‑steel connections, and concrete anchoring scenarios. Its hot‑dip galvanized finish makes it especially suitable for outdoor installations, coastal regions, and industrial settings where exposure to moisture, salt spray, or aggressive chemicals is common. Contractors often employ this bolt when upgrading older structures to meet current seismic or load‑bearing standards, as its length and strength allow for deep penetration into existing members without the need for extensive re‑fabrication.

In residential construction, the bolt is frequently used to reinforce deck joists, attach ledger boards, and secure roof trusses, providing homeowners with added peace of mind regarding structural integrity. Commercial applications include securing steel columns in warehouse buildings, anchoring mezzanine platforms, and reinforcing load‑bearing walls in office complexes. The bolt’s versatility also extends to specialty projects such as bridge retrofits, parking garage upgrades, and modular building assemblies, where rapid, reliable fastening is essential to maintain project schedules.

Installation of the RFB bolt is straightforward: drill a pilot hole matching the bolt’s diameter, insert the bolt with the washer in place, and tighten the hex head to the recommended torque value. The coarse thread design ensures a strong grip even in softer materials, while the washer helps prevent pull‑through and distributes load evenly. For applications requiring additional reinforcement, the bolt can be paired with epoxy or high‑strength adhesives, further enhancing its load‑carrying capacity.

Maintenance considerations are minimal due to the galvanic coating, which protects the underlying steel from rust and degradation. Periodic visual inspections can verify the integrity of the coating and the tightness of the connection, but the bolt typically remains serviceable for decades without the need for replacement. This longevity translates into lower lifecycle costs for building owners and facility managers.

Why Choose Us

Choosing the Simpson Strong‑Tie RFB retrofit bolt means selecting a product backed by decades of industry expertise and a reputation for reliability. The company invests heavily in research, testing, and quality control, ensuring that each bolt meets stringent performance criteria before it leaves the factory. This commitment to excellence reduces the risk of on‑site failures, saving time and money for contractors and engineers alike.

Our bolts are manufactured in state‑of‑the‑art facilities that employ automated coating lines, precision machining, and comprehensive inspection protocols. The result is a consistent, high‑quality fastener that performs predictably across a wide range of conditions. Additionally, Simpson Strong‑Tie offers extensive technical support, including engineering consultation, installation guidelines, and fastener selection tools, helping customers make informed decisions for their specific project requirements.

Customer satisfaction is further reinforced by our responsive after‑sales service. Should any issues arise, our dedicated support team is available to provide troubleshooting assistance, warranty information, and replacement options. This level of service ensures that users can rely on the product throughout its lifespan, confident that the manufacturer stands behind its performance claims.

Environmental responsibility is also a core value. The hot‑dip galvanizing process used for the RFB bolt is environmentally friendly, producing a durable coating that extends the product’s service life and reduces the need for frequent replacements. By selecting our bolt, customers contribute to sustainable building practices while benefiting from a high‑performance, long‑lasting solution.

Key Features

• High‑grade alloy steel with hot‑dip galvanized coating for superior corrosion resistance.
• 5/8‑inch diameter and 16‑inch length deliver up to 12,000 lb shear capacity for heavy‑duty applications.
• Coarse UNC thread and hex head design provide easy installation and strong thread engagement.
• Included washer distributes load evenly, preventing material deformation and extending joint life.
• Backed by Simpson Strong‑Tie technical support and warranty for peace of mind.

FAQ

What is the maximum shear capacity of the RFB retrofit bolt?

The bolt is rated for a maximum shear strength of 12,000 pounds, making it suitable for demanding structural connections where high load resistance is required.

Is the bolt suitable for outdoor and coastal environments?

Yes. The hot‑dip galvanized finish provides excellent protection against moisture, salt spray, and other corrosive elements, ensuring long‑term durability in harsh outdoor conditions.

Do I need a separate washer when installing this bolt?

An appropriately sized washer is included with each bolt. The washer helps distribute the bearing pressure across the connected material, reducing the risk of pull‑through and enhancing joint stability.

Can this bolt be used with wood or composite materials?

Absolutely. The coarse UNC thread profile is designed to grip securely in a variety of substrates, including wood, engineered lumber, and composite panels, while still delivering high shear performance.

What technical support is available if I have installation questions?

Simpson Strong‑Tie offers comprehensive technical resources, including installation manuals, torque specifications, and direct engineering assistance to help you achieve optimal results on any project.