ASTM A563 DH Heavy Hex Nuts
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DIN 125 Flat Washer
DIN 125 Flat Washer
ASTM A194 2H Heavy Hex Nuts - Image 1

ASTM A194 2H Heavy Hex Nuts

Engineered for extreme pressure and high-temperature service, the ASTM A194 2H Heavy Hex Nut by Qi Sheng delivers maximum joint integrity for critical B2B industrial applications. Manufactured from quenched and tempered carbon steel, it is the standard fastening solution for flanges, valves, and pressure vessels.

  1. High-Temperature Performance: Designed to maintain strength and structural stability in high-heat environments.
  2. Heavy-Duty Strength: Quenched and tempered medium carbon steel ensures exceptional proof load capabilities.
  3. Perfect Compatibility: The ideal mating nut for high-strength ASTM A193 Grade B7 stud bolts and hex bolts.
  4. Wider Across-Flats: Heavy hex design provides a larger bearing surface area to distribute clamp load safely.
  5. Primary Industries: Oil & Gas, Petrochemical Refineries, Power Generation, and Heavy Structural Engineering.
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Description

High-Strength ASTM A194 2H Heavy Hex Nuts for Critical Applications

Qi Sheng manufactures industry-leading ASTM A194 Grade 2H Heavy Hex Nuts, rigorously tested to meet the exact demands of heavy industry. Forged from medium carbon steel and treated through a precise quenching and tempering process, these nuts are specifically designed for high-pressure, high-temperature service. Their robust heavy hex profile guarantees exceptional torque retention and blowout resistance in critical piping systems.

Product Specifications

Specification Parameter Technical Details
Standard ASTM A194 / ASME B18.2.2 / DIN 6915
Material Medium Carbon Steel (Quenched and Tempered)
Grade Grade 2H
Size Range 1/4″ to 4″ / Metric M12 – M100
Thread Type UNC, UNF, Metric (Coarse & Fine Pitch)
Surface Treatment Plain, Black Oxide, Zinc Plated, Hot Dip Galvanized (HDG), PTFE/Xylan Coated
Unit of Measure Piece (B2B Wholesale Available)
Packaging Bulk cartons with pallet / Small boxes in cartons with pallet

Industrial Application Scenarios

Our ASTM A194 2H Heavy Hex Nuts are the backbone of piping and structural integrity across the globe. Below is a specific breakdown of critical application scenarios where Grade 2H excels:

Industry Sector Specific Scenario Recommended Coating Core Usage Considerations
Oil & Gas Pipeline flanges, wellhead equipment PTFE / Xylan or HDG Requires extreme pressure resistance and anti-galling properties during assembly.
Petrochemical Refineries, chemical storage tanks Plain or Black Oxide Must withstand high internal pressures and high-temperature fluid transfers.
Power Generation Steam turbines, high-pressure boilers Plain (Oiled) Continuous thermal cycling requires the superior stress retention of quenched carbon steel.
Valve Manufacturing Industrial gate valves, ball valves Zinc Plated or HDG Reliable clamp load to prevent hazardous fluid or gas leaks under intense pressure.
Construction Heavy steel structures, bridge joints Hot Dip Galvanized Combined with structural bolts for maximum shear and tensile strength in outdoor environments.

How to Order / Quick Specs

To ensure you receive the exact fastening solution for your project, please refer to our quick order guide. As a B2B supplier, Qi Sheng is ready to fulfill your bulk requirements.

Quick Specs Checklist for Inquiry:

  1. Product: ASTM A194 2H Heavy Hex Nut
  2. Size & Thread: Specify exact size (e.g., 1″-8 UNC or M24) and thread pitch.
  3. Surface Treatment: (e.g., Plain, HDG, PTFE Coated, etc.)
  4. Estimated Quantity: (Bulk/Pallet quantities)
  5. Destination: (e.g., Canada, USA, etc.)

Ready to order? Add this product to your quote list or click here to Contact Us for wholesale pricing, custom dimensional requests, and lead times. Our engineering team will respond with a comprehensive B2B quote.

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