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ASM Fastener – Precision
Stud Bolts & Fasteners

China's premier manufacturer of high-performance fully threaded studs, double-end bolts, nuts, and washers. 14 years of excellence in ASTM SA193 B7, B8M, A320 L7, and NORSOK M650 compliant fasteners.

Our Core Products

Engineered for extreme environments in petrochemical, nuclear, marine, and energy sectors. All products meet ASTM, ASME, ISO, and NORSOK standards.

Fully Threaded Stud

Fully Threaded Stud

  • ASTM SA193: B7, B8, B8M, B16
  • A320: L7, B8 CL2, B8M CL2
  • Diameter: M6–M100
  • Length: 50–6000mm
  • Material: Alloy Steel, Stainless Steel
Double End Stud

Double End Stud

  • ASME B16.5, B16.47
  • Thread: UNC, UNF, Metric
  • Grade: B7, B8, B8M, L7M
  • Heat Treated & Quenched
  • EN 10204 3.1 Certified
Hexagon Bolt

Hexagon Bolt

  • Grade: 8.8, 10.9, 12.9
  • Material: 4140, 304, 316, 321
  • Surface: Plain, Galvanized, Dacromet
  • Standards: ISO 4014, DIN 933
  • High-Temp & Corrosion Resistant
Threaded Rod

Threaded Rod

  • Continuous Thread: M6–M64
  • Material: A193 B7, B8, B8M
  • Length: Up to 6 meters
  • Thread Type: Metric, UNC, UNF
  • Custom Cutting Available
Heavy Hex Nut

Heavy Hex Nut

  • Grade: 2H, 7H, 8H
  • Material: 4140, 304, 316
  • Standards: ASME B18.2.2, ISO 4035
  • High-Strength & Durable
  • For B7, L7, B8M Studs
Stud Bolt

Stud Bolt

  • ASME SA193 / SA320
  • B7, B8, B8M, L7, L43 Series
  • High-Temp & Low-Temp Options
  • Quenched & Tempered
  • Used in Valves & Flanges
Stainless Steel Nut

Stainless Steel Nut

  • Type: A194 Grade 8, 8M
  • Material: 304, 316, 321, 347
  • Corrosion & Heat Resistant
  • For Petrochemical & Marine
  • CE & CPR Certified
Washer

Washer

  • Type: Flat, Spring, Lock
  • Material: Carbon Steel, SS304/316
  • Size: M6–M100
  • Galvanized & Dacromet Options
  • For High-Load Applications

About ASM Fastener

ASM Fastener is China's premier manufacturer of high-quality fully threaded stud bolts and industrial fasteners. With over 14 years of focused expertise, we specialize in producing ASTM SA193 B7, B7M, B8, B8M, B16, and A320 L7 series all-thread studs for extreme environments.

Our products are trusted in critical sectors including petrochemical, nuclear power, marine vessels, solar energy, and high-pressure valve manufacturing. We combine advanced CNC machining, strict heat treatment processes, and rigorous quality control to deliver reliable bolting solutions.

  • 14+ Years in Industrial Fasteners
  • ISO 9001, ISO 14001, ISO 45001 Certified
  • NORSOK M650 & EU CE Compliant
  • Global Export to 50+ Countries
ASM Fastener Manufacturing

Global Certifications

Our manufacturing processes and products meet the highest international standards for quality, safety, and environmental responsibility.

ISO 9001:2000

ISO 14001

ISO 45001

TS Certification

NORSOK M650

EU CE

PED 4.3

CPR 14399

CPR 15048

EN 10204 3.1

ASME SA193

ASTM A320

Key Applications

Petrochemical Industry

Used in pressure vessels, heat exchangers, and pump valves requiring high-strength, corrosion-resistant fasteners.

Nuclear Power Machinery

Critical bolting for reactor systems and safety components under extreme temperature and pressure.

Marine Vessels

Stainless steel and corrosion-resistant fasteners for offshore platforms and shipbuilding.

Solar Energy

Structural fasteners for solar panel mounting systems and energy infrastructure.

Automotive Manufacturing

High-torque bolts and studs for engine and transmission assembly lines.

High-Pressure Valves

ASME B16.5/B16.47 compliant studs and nuts for flanged connections.

Latest News & Insights

12 Dec 2025

New All-Threaded Studs A193 B7 and A320 L7 Introduced

These essential screw fasteners are designed for petrochemical, pressure vessels, heat exchangers, and pump valves. They offer excellent performance in harsh environments with high temperature and pressure resistance.

Read More →
10 Dec 2025

ASTM A320 Grade L7 Low-Temperature Stud Bolts

Reliable bolting solutions from ASM Fastener for pressure vessels, pipelines, and offshore structures. Designed for sub-zero environments with superior toughness.

Read More →
09 Dec 2025

Key Considerations for Bolted Connections

Understanding vibration, impact, and fluctuating loads is crucial for safe and durable mechanical joints. Learn how proper preload and material selection prevent failures.

Read More →

Contact ASM Fastener

For quotes, technical support, or partnership inquiries, visit our official website to get in touch with our team.

Contact Information

Phone: +86 18013427919

Email: asme@ksasme.com

Website: asmefastener.com

Visit Official Website to Contact

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