Fractional Sizes ASTM A563 Grade A Hex Coupling Nut with Plain Finish

Fractional Sizes ASTM A563 Grade A Hex Coupling Nut with Plain Finish

Reliable Threaded Extension for Structural and Industrial Applications

The Fractional Sizes ASTM A563 Grade A Hex Coupling Nut with Plain Finish is a heavy-duty fastening solution designed to connect or extend threaded rods and bolts in structural, construction, and industrial assemblies. Manufactured to ASTM A563 Grade A specifications, this coupling nut provides dependable strength, precise threading, and consistent performance in load-bearing applications where alignment and durability are essential.

ASTM A563 Grade A Specifications

Structural-Grade Performance

ASTM A563 Grade A coupling nuts are engineered to meet structural fastening requirements and are commonly used alongside ASTM A36 and similar low-carbon steel threaded fasteners.

• Material: Carbon steel

• Standard: ASTM A563 Grade A

• Sizes: Fractional diameters ranging from 1/4" to 1"

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

• Design: Long hex profile for full thread engagement

The extended body length allows the coupling nut to securely join two male-threaded components while maintaining proper load distribution.

Plain Finish Advantages

Clean, Uncoated Steel Surface

The plain finish provides a natural steel appearance with no added coatings or platings.

• Ideal for indoor or controlled environments

• Compatible with welding, painting, or secondary finishing

• Cost-effective option for applications where corrosion resistance is not critical

• Ensures accurate thread fit without coating buildup

Plain finish coupling nuts are often selected for temporary assemblies, dry structural connections, or projects requiring post-installation treatments.

Applications and Uses

Versatile Industrial Fastening Solution

ASTM A563 Grade A hex coupling nuts are widely used in:

• Structural steel and commercial construction

• Threaded rod extensions and anchor systems

• Machinery and equipment assembly

• Maintenance, repair, and fabrication projects

The hex exterior allows easy installation using standard wrenches, providing secure torque application and simplified alignment during assembly.

Dependable Strength for Structural Connections

The Fractional Sizes ASTM A563 Grade A Hex Coupling Nut with Plain Finish delivers strength, precision, and reliability for demanding fastening applications. Designed for performance and versatility, it is a trusted choice for contractors, fabricators, and industrial professionals who need dependable threaded connections without unnecessary coatings.