Fractional Sizes ASTM A563 Grade A Hex Coupling Nut with Hot Dipped Galvanized Plating

Fractional Sizes ASTM A563 Grade A Hex Coupling Nut with Hot Dipped Galvanized Plating

Structural Strength for Harsh Outdoor Environments

The Fractional Sizes ASTM A563 Grade A Hex Coupling Nut with Hot Dipped Galvanized Plating is a heavy-duty fastening solution engineered for structural and outdoor applications where strength and corrosion resistance are critical. Manufactured to ASTM A563 Grade A specifications, this coupling nut is designed to join or extend threaded rods and bolts while delivering long-term performance in demanding environments.

ASTM A563 Grade A Structural Specifications

Designed for Load-Bearing Connections

ASTM A563 Grade A coupling nuts are commonly used in structural steel assemblies and anchoring systems requiring reliable mechanical performance.

• Material: Carbon steel

• Standard: ASTM A563 Grade A

• Sizes: Fractional diameters from 1/4" through 1"

• Thread Type: Unified National Coarse (UNC) internal threads

• Design: Extended hex body for full thread engagement and alignment

The long hex profile ensures proper torque application, even load distribution, and secure engagement when connecting two male-threaded fasteners.

Hot Dipped Galvanized Plating Advantages

Maximum Corrosion Protection

Hot dipped galvanizing coats the coupling nut in a thick layer of zinc by immersing it in molten zinc, providing superior protection against rust and corrosion.

• Excellent resistance to moisture, salt, and harsh weather

• Ideal for outdoor, coastal, and industrial environments

• Long-lasting zinc coating protects exposed threads

• Meets common structural and construction corrosion standards

This finish is especially well-suited for exterior steel structures and anchoring systems exposed to the elements.

Applications and Common Uses

Built for Construction and Industrial Use

ASTM A563 Grade A hex coupling nuts with hot dipped galvanized plating are widely used in:

• Structural steel framing and anchoring

• Threaded rod extensions in concrete and masonry

• Bridges, towers, and outdoor infrastructure

• Heavy equipment installation and maintenance

The hex exterior allows easy installation with standard wrenches, even when wearing gloves in field conditions.

Reliable Performance in Extreme Conditions

The Fractional Sizes ASTM A563 Grade A Hex Coupling Nut with Hot Dipped Galvanized Plating delivers structural-grade strength combined with maximum corrosion resistance. It is the ideal choice for professionals who need durable, code-compliant fastening solutions for outdoor and high-exposure applications where long service life and reliability matter most.