HSFG HEAVY HEX NUT – ASTM A194

🔩 High Strength Heavy Hex Nuts for Critical Bolted Connections

HSFG (High Strength Friction Grip) Heavy Hex Nuts manufactured to ASTM A194 standards are designed specifically for high-pressure and high-temperature applications requiring exceptional strength and reliability. These nuts are commonly used in conjunction with heavy hex bolts and studs to secure flanged joints in oil & gas, petrochemical, power plants, and structural industries.

At National Fasteners, we provide ASTM A194 heavy hex nuts made from premium alloy steel and carbon steel materials. Our nuts comply with rigorous quality standards and offer superior mechanical properties, ensuring safe and durable fastening in demanding environments.

🔧 Product Specifications:

• Standard: ASTM A194 / A194M

• Grade: 2H (High tensile alloy steel), 2HM, 7, 7M, 8, 8M

• Size Range: M10 to M64  (1/4″ TO 4″ INCH) – Custom Sizes Available Against Order

• Thread Type: Metric coarse thread (fine thread on request)

• Nut Style: Heavy hex nut per ANSI/ASME B18.2.2 dimensions

• Material: Alloy Steel, Carbon Steel

• Surface Finishes:

  • Black Oxide

  • Zinc Plated

  • Hot-Dip Galvanized

  • Phosphate Coated

  • Geomet

  • Self-Color (Plain)

⚙️ Key Features of ASTM A194 HSFG Heavy Hex Nuts:

• Designed to resist high tensile loads in friction grip bolted connections

• Heavy hex geometry provides increased wrenching surface area for better torque application

• High strength material grades ensure reliability in high pressure and temperature conditions

• Compatible with ASTM A193 bolts and studs for critical industrial applications

• Available with various surface finishes to protect against corrosion

🔩 Typical Applications:

• Pressure vessels and flanged pipe connections

• Oil and gas refineries and pipelines

• Power generation plants

• Petrochemical and chemical processing equipment

• Heavy machinery and structural steel assemblies

• High-pressure valves and pump assemblies

💡 Why Choose Us for ASTM A194 HSFG Heavy Hex Nuts?

✅ ISO 9001:2015 Certified Manufacturer
🧪 Strict Quality Assurance and Mechanical Testing
⚙️ Custom Threading, Grades & Finishes Available
🏭 High Volume Manufacturing with Fast Turnaround
🌍 Reliable Supplier to Domestic and Export Markets

📞 Request a Quote or Sample

Need ASTM A194 HSFG heavy hex nuts for your critical projects?
Contact us today for competitive pricing, technical support, and quick delivery.

👉 Request a Quote | 📧 sales@nationalfasteners.in | 📞 +91 70093-08799