Fractional Sizes ASTM A563 Grade A Hex Coupling Nut with Clear Cr3 Zinc Plating

Fractional Sizes ASTM A563 Grade A Hex Coupling Nut with Clear Cr3 Zinc Plating

Structural Strength with Enhanced Corrosion Protection

The Fractional Sizes ASTM A563 Grade A Hex Coupling Nut with Clear Cr3 Zinc Plating is a structural-grade fastening solution designed to securely join or extend threaded rods and bolts in construction and industrial applications. Manufactured to ASTM A563 Grade A specifications, this coupling nut delivers dependable strength, precise threading, and improved corrosion resistance for environments where added protection is required.

ASTM A563 Grade A Structural Specifications

Built for Load-Bearing Applications

ASTM A563 Grade A coupling nuts are commonly paired with ASTM A36 and similar low-carbon steel threaded fasteners in structural assemblies.

• Material: Carbon steel

• Standard: ASTM A563 Grade A

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

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

• Design: Long hex body for full thread engagement

The extended hex profile ensures proper alignment, even load distribution, and strong mechanical connections when joining two male-threaded components.

Clear Cr3 Zinc Plating Benefits

Corrosion Resistance with Environmental Compliance

Clear Cr3 (trivalent chromium) zinc plating adds a protective barrier that helps prevent rust and oxidation while meeting modern environmental standards.

• Enhanced corrosion resistance compared to plain finish

• RoHS- and REACH-compliant plating system

• Clean, bright appearance for professional installations

• Maintains accurate thread fit without excessive buildup

This finish makes the coupling nut suitable for indoor and light outdoor applications where moisture exposure is possible but not extreme.

Applications and Common Uses

Versatile Coupling Solution for Industrial and Construction Projects

ASTM A563 Grade A hex coupling nuts with Cr3 zinc plating are widely used in:

• Structural steel framing and anchoring systems

• Threaded rod extensions and suspension assemblies

• Machinery installation and industrial fabrication

• Maintenance and repair operations

The hex-shaped exterior allows easy installation with standard hand tools, providing reliable torque and secure engagement.

Dependable Performance with Added Protection

The Fractional Sizes ASTM A563 Grade A Hex Coupling Nut with Clear Cr3 Zinc Plating combines structural-grade strength with corrosion resistance and environmental responsibility. It is an ideal choice for professionals who need durable, code-compliant threaded connections with added protection against rust in demanding work environments.