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Products > Studs & Nuts > Heavy Hex Nuts
Heavy Hex Nuts
Our Heavy Hex Nuts are manufactured to ASTM A194 specifications for high-pressure, high-temperature, and corrosive service applications. Available in Grades 2H, 2HM, 4, 7L, 7LM, 8, and 8M, these nuts are engineered for secure, durable bolting connections in demanding environments such as oil & gas, petrochemical, power generation, and pipeline industries.
Each grade is precisely heat-treated and tested to ensure consistent hardness, strength, and corrosion resistance. Whether you require carbon steel (2H, 2HM) or stainless steel (8, 8M), we supply materials that meet your project’s critical standards.
Available with plain, zinc-plated, cadmium-plated, or PTFE-coated finishes, our heavy hex nuts are compatible with ASTM A193 stud bolts and fully traceable to MTRs.
Features:
- Meets ASTM A194 / ASME B18.2.2 requirements
- Available in sizes ¼” to 4” (and metric equivalents)
- Suitable for high-temperature and high-pressure bolting
- Material traceability and certification available
Common Applications:
- Pressure vessels and valves
- Flange bolting assemblies
- Refineries and chemical plants
- Power generation systems