Fractional Size A325 Type 1 Heavy Hex Structural Bolt with Hot Dipped Galvanized Plating

Fractional Size A325 Type 1 Heavy Hex Structural Bolt with Hot Dipped Galvanized Plating

The Fractional Size A325 Type 1 Heavy Hex Structural Bolt with Hot Dipped Galvanized (HDG) plating is engineered for high-strength structural steel connections requiring superior corrosion resistance. Designed to meet ASTM A325 Type 1 specifications, this heavy hex structural bolt is widely used in bridges, commercial buildings, utility structures, and industrial frameworks where durability and long-term performance are critical.

Manufactured from medium carbon steel and heat-treated for enhanced strength, A325 Type 1 bolts are specifically intended for steel-to-steel structural joints. The addition of hot dipped galvanized coating provides extended protection in outdoor, high-moisture, and harsh environmental conditions.

Built to ASTM A325 Type 1 Structural Standards

A325 Type 1 heavy hex bolts are designed for pre-tensioned applications and are commonly installed in slip-critical and bearing-type connections. The heavy hex head provides increased bearing surface area compared to standard hex bolts, ensuring better load distribution and improved wrench engagement during installation.

Key Specifications and Features

• Fractional inch diameters for standard structural steel connections

• Heavy hex head design for maximum clamping force

• Heat-treated medium carbon steel construction

• Engineered for use with heavy hex nuts and hardened washers

• Designed for torque-controlled and tension-controlled installation methods

These structural bolts are commonly specified in projects that demand consistent mechanical performance and compliance with structural steel codes.

Hot Dipped Galvanized Coating for Maximum Corrosion Protection

Hot dipped galvanized plating involves immersing the bolt in molten zinc, creating a metallurgically bonded coating that protects against rust and oxidation. This thick zinc layer forms a durable barrier, significantly extending the service life of structural fasteners exposed to the elements.

Benefits of HDG Structural Bolts

• Long-term corrosion resistance in outdoor applications

• Ideal for bridges, highway structures, and utility poles

• Reduced maintenance and replacement costs

• Protection against moisture, chemicals, and harsh climates

Common Applications

Fractional Size A325 Type 1 Heavy Hex Structural Bolts with Hot Dipped Galvanized plating are frequently used in:

• Structural steel erection

• Bridge construction and repair

• Transmission towers and substations

• Industrial buildings and warehouses

• Marine and coastal infrastructure

For engineers, contractors, and fabricators, these galvanized structural bolts provide dependable strength, code compliance, and long-lasting protection in demanding structural environments.