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

USA Fractional Size A325 Type 1 Heavy Hex Structural Bolt – Hot Dipped Galvanized

When strength, safety, and structural integrity are non-negotiable, the USA Fractional Size A325 Type 1 Heavy Hex Structural Bolt with Hot Dipped Galvanized plating delivers dependable performance. Designed for high-strength steel-to-steel connections, this structural bolt meets stringent industry standards and is widely used in construction, infrastructure, and heavy equipment assembly. Manufactured in the USA, these bolts provide consistent quality, traceability, and compliance with demanding job site specifications.

Built to ASTM A325 Type 1 Specifications

A325 Type 1 heavy hex structural bolts are manufactured from medium carbon steel and heat-treated to achieve the mechanical properties required for structural steel connections. These bolts are engineered to meet ASTM A325 standards, making them ideal for slip-critical and bearing-type joints in structural applications.

Key Mechanical Properties

• High tensile strength for structural load-bearing applications

• Designed for pre-tensioned and torque-controlled installations

• Heavy hex head for greater bearing surface and wrench engagement

• Compatible with hardened structural washers and heavy hex nuts

The heavy hex head configuration provides increased contact area compared to standard hex bolts, improving clamping force distribution across steel connections.

Hot Dipped Galvanized Plating for Corrosion Resistance

Hot dipped galvanized (HDG) plating offers superior protection against corrosion in outdoor and exposed environments. The zinc coating is metallurgically bonded to the steel, forming a durable barrier that resists moisture, chemicals, and harsh weather conditions.

Benefits of HDG Structural Bolts

• Long-term rust protection in bridges and buildings

• Ideal for marine, highway, and infrastructure projects

• Reduced maintenance costs over time

• Suitable for exterior steel frameworks and towers

Hot dipped galvanized A325 bolts are commonly paired with galvanized nuts and washers to maintain coating compatibility and prevent premature corrosion.

Common Applications

USA Fractional Size A325 Type 1 Heavy Hex Structural Bolts are widely used in:

• Structural steel erection

• Bridge construction

• Transmission towers

• Industrial buildings

• Heavy equipment support frames

For contractors, steel fabricators, and structural engineers, these high-strength galvanized structural bolts provide the reliability and performance required for critical load-bearing assemblies. When project specifications call for ASTM-compliant, USA-made structural fasteners, A325 Type 1 heavy hex bolts with hot dipped galvanized plating are the trusted solution.