In industries where extreme pressure, heat, and stress are part of everyday operations, using the right fasteners isn’t just a matter of performance—it’s a matter of safety. Stud Bolt B7 with 2H nuts has become the go-to solution for oil & gas, petrochemical, refinery, and power generation projects worldwide.
At Hardhawk Fastener, we specialize in the wholesale manufacturing of ASTM A193 Grade B7 stud bolts with ASTM A194 Grade 2H heavy hex nuts, delivering exceptional strength, precision, and corrosion resistance for critical applications.
What Are B7 Stud Bolts?
B7 stud bolts are made from heat-treated chromium-molybdenum steel, conforming to ASTM A193 specifications. These bolts are engineered for use in high-temperature and high-pressure environments. Paired with 2H nuts, they offer unmatched reliability in flange connections, pressure vessels, valves, and pipe assemblies.
Key Features
✅ Material: ASTM A193 Grade B7 (alloy steel, quenched and tempered)
✅ Nuts: ASTM A194 Grade 2H (heavy hex, high-strength carbon steel)
✅ Thread Types: UNC, UNF, Metric coarse/fine
✅ Size Range: M6 to M100 (1/4″ to 4″)
✅ Length: Customized per project drawings
✅ Finish Options: Plain, Black oxide, Zinc plated, Hot dip galvanized, PTFE coated
Applications Across Industries
| Industry | Application |
|---|---|
| Oil & Gas | Flange bolting, subsea equipment |
| Petrochemical | Heat exchangers, reactors |
| Power Plants | Steam turbines, boiler systems |
| Construction | Structural steel, anchor base plates |
| Marine & Offshore | Pipeline joints, vessel reinforcements |
Why B7 + 2H Combo?
- Thermal Resistance: Performs well up to 450°C
- Mechanical Strength: Tensile strength ≥ 860 MPa
- Excellent Compatibility: Designed for flanged joints under tension
- Compliance: Meets ANSI/ASME, ASTM, and ISO standards
This combination ensures long-lasting joint integrity in harsh working conditions where ordinary bolts would fail.
Why Choose Hardhawk?
At Hardhawk Fastener, we support industrial wholesalers, project contractors, and OEMs with:
- 🔩 Bulk export capabilities
- 📦 Custom packaging & markings
- 📄 Material Test Certificates (MTCs) & 3.1 Certs
- 🚢 On-time delivery & competitive factory pricing
- 🌍 Global shipping & multilingual support
🔗 Explore our full product range of high-performance stud bolts and threaded rods here
Final Thoughts
For distributors and industrial buyers looking for dependable, high-performance fasteners, B7 stud bolts with 2H nuts represent a trusted choice in mission-critical infrastructure. Backed by quality manufacturing and global export services, Hardhawk is ready to be your strategic partner in fastening solutions.