5/16″-18 Conquest Heavy Hex Nut, A563 Grade A Hot Dip Galvanized

The 5/16″-18 Conquest Heavy Hex Nut is a carbon steel fastener coated in hot dip galvanized zinc for extended life in outdoor and high-moisture environments. Manufactured to ASTM A563 Grade A standards, this nut is ideal for general-purpose fastening, particularly when weather resistance is essential.

Corrosion-Resistant Nut for Exterior and Utility Fastening

With its coarse 18 TPI thread and oversized heavy hex design, this nut provides reliable strength and more surface contact than standard hex nuts. Its built for compatibility with galvanized bolts and threaded rod, making it perfect for fencing brackets, utility framing, or agricultural hardware exposed to the elements.

Key Features

• Material: Carbon steel with hot dip galvanized finish.
• Thread Type/TPI: Coarse thread with 18 TPI for solid engagement.
• Heavy Hex Design: Increased surface area for better clamping and wrench grip.
• Finish: Zinc coating adds corrosion resistance in wet or outdoor conditions.
• Standard Compliance: Meets ASTM A563 Grade A specifications.

Applications

• Fencing and exterior framing
• Utility hardware in exposed environments
• Light-duty agricultural and structural connections
• Construction and repair in damp locations
• DIY outdoor builds

Installation Tips

• Pair with hot dip galvanized 5/16″-18 bolts or rod to avoid thread galling.
• Use heavy hex-compatible sockets for proper torque.
• Clean threads before assembly to ensure smooth installation.

Related Items:

• A307 Threaded Rod
• Grade 55 Threaded Rod
• Plain Finish Threaded Rod
• Hot Dip Galvanized Threaded Rod

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