Metric Sizes A4-70 Stainless Steel Hex Coupling Nut

Metric Sizes A4-70 Stainless Steel Hex Coupling Nut

Maximum Corrosion Resistance for Demanding Environments

The Metric Sizes A4-70 Stainless Steel Hex Coupling Nut is a premium fastening solution engineered for applications requiring exceptional corrosion resistance and reliable mechanical strength. Designed to connect or extend male-threaded components such as threaded rod or bolts, this coupling nut is ideal for harsh, corrosive, and outdoor environments where standard fasteners may fail.

A4-70 Stainless Steel Material

Superior Protection in Aggressive Conditions

A4-70 stainless steel is a molybdenum-alloyed austenitic stainless steel, commonly compared to 316 stainless steel, offering enhanced resistance to chlorides, chemicals, and saltwater.

• Tensile strength: 700 MPa (A4-70 class)

• Outstanding resistance to rust, pitting, and crevice corrosion

• Excellent performance in marine, coastal, and chemical environments

• Non-magnetic in most service conditions

This makes A4-70 coupling nuts the preferred choice for applications exposed to moisture, chemicals, or extreme weather.

Hex Coupling Nut Design

Secure Thread Extension and Load Distribution

Hex coupling nuts are longer than standard hex nuts, allowing for increased thread engagement and stronger connections.

• Thread Type: Metric internal threads (coarse)

• Hex Body: Allows easy installation with standard metric tools

• Full-Length Threading: Ensures proper alignment and load transfer

• Metric Sizes: Commonly available from M6 through M30

The extended length improves joint strength and stability compared to standard nuts.

Common Applications

Trusted Across Critical Industries

Metric A4-70 stainless steel hex coupling nuts are widely used in:

• Marine and offshore construction

• Chemical processing and industrial facilities

• Food processing and pharmaceutical equipment

• Architectural and structural installations

• Renewable energy and outdoor infrastructure

Their clean appearance and corrosion resistance also make them suitable for exposed or aesthetic applications.

High-Performance Metric Fastening Solution

The Metric Sizes A4-70 Stainless Steel Hex Coupling Nut delivers long-lasting performance where corrosion resistance is non-negotiable. Combining high-strength metric threading with superior environmental durability, this coupling nut is an excellent choice for professionals who demand reliability, safety, and extended service life in the most challenging conditions.