SA194 Grade 2H High Tensile Heavy Hex Nut

Product Description

The SA194 Grade 2H High Tensile Heavy Hex Nut is a high-strength carbon steel nut specifically manufactured for high-pressure and high-temperature applications. It is quenched and tempered to achieve superior hardness and tensile strength, making it suitable for heavy vibration and stress conditions. This nut complies with ASTM A194 Grade 2H specifications, which cover chemical composition, heat treatment, and mechanical properties like hardness (minimum 248 BHN) and proof load stress.

Key Benefits

         High tensile strength suitable for heavy load applications

         Excellent resistance to high temperature and pressure

         Enhanced hardness due to heat treatment (quenching and tempering)

         Durable under heavy vibration and stress environments

         Available in various finishing options such as plain, black oxide, zinc plating, and hot-dip galvanizing for corrosion resistance

Typical Applications

         Petroleum and chemical industry equipment

         Heavy machinery and automobile engine components

         Aircraft engine parts where high stress and vibration occur

         High pressure and high temperature service bolts and flanges

         Structural applications requiring heavy hex nuts with high load capacity

Usage Details

         Often used with ASTM A193 Grade B7 bolts or similar high-strength fasteners

         Sizes range typically from 1/4 inch to 4 inches nominal diameter, including metric variants

         Can be coupled with washers like ASTM A194 Grade 2H washers for optimal joint durability

         Suitable for mechanical joints in energy production, automotive, aerospace, and industrial machinery

         Installation requires proper torque settings compatible with high tensile strength to ensure safe and secure fastening

Other Well-Known Names for Same Product

         SA194 Grade 2H Heavy Hex Nut

         ASTM A194 Grade 2H Hex Nut

         High tensile heavy hex nut

         Carbon steel heavy hex nuts

         High pressure and high temperature nut

         ASTM Grade 2H nut applications

         Heavy vibration resistant nuts

         SA194 Grade 2H nut dimensions

         ASTM A194 Grade 2H hex nut supplier

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Technical Details 

Engineered for Strength and Stability

SA194 Grade 2H Heavy Hex Nuts are designed to deliver superior strength and secure fastening in critical applications. Their high tensile properties and robust color steel construction ensure dependable performance, even in demanding environments. Each nut meets stringent quality benchmarks and is suitable for industrial, construction, and machinery use.


Versatile Surface Finishing Options

With surface treatments including blacking, black-oxide, and phosphatizing, these hex nuts offer additional protection against wear and corrosion. The finishing not only enhances durability but also gives each nut a sleek, professional black appearance, making them ideal for projects where aesthetics and long-term performance are crucial.