A194 2HM Heavy Hex Nut

A194 2HM Heavy Hex Nuts are ASTM A194 Grade 2HM alloy steel nuts designed for high temperature, high pressure and severe service applications. Manufactured according to ASTM A194 specifications, these heavy hex nuts provide excellent strength, reliability and durability for critical bolting systems. Although A194 2HM Heavy Hex Nuts have the same dimensional requirements as A194 2H Heavy Hex Nuts, including thread size, width across flats and nut thickness, their material properties and mechanical performance are different. The 2HM grade is specially developed for more demanding operating conditions, providing enhanced performance in applications where standard 2H nuts may not be suitable.

A194 2HM Heavy Hex Nuts are commonly used with ASTM A193 B7M alloy steel studs to form high-strength bolting assemblies for industrial equipment. They are widely applied in oil and gas, refinery, petrochemical, power generation, pressure vessel and other industries that require reliable fastening solutions under high temperature, high pressure and harsh service environments. With consistent quality, precise dimensions and dependable performance, A194 2HM Heavy Hex Nuts help ensure secure and long-lasting connections in critical applications. We can supply A194 2HM Heavy Hex Nuts in various sizes, thread configurations and surface finishes according to customer requirements and applicable industry standards.

Specification of A194 2HM Heavy Hex Nuts:

A194 2HM Heavy Hex Nuts are manufactured according to ASTM A194 / ASME SA194 specifications and are designed for high temperature, high pressure and severe service applications. Compared with A194 2H Heavy Hex Nuts, A194 2HM nuts have the same dimensional requirements, but they feature different mechanical requirements and material performance. The main difference is that Grade 2HM requires stricter hardness control and improved resistance to hydrogen embrittlement, making it more suitable for sour service environments containing hydrogen sulfide (H₂S). The following table provides the detailed specifications of A194 2HM Heavy Hex Nuts, including standard, material grade, heat treatment, mechanical properties and hardness requirements.

Chemical Composition for A194 2HM Heavy Hex Nuts:

Application of A194 2HM Heavy Hex Nuts:

A194 2HM nuts are commonly used in heavy-duty applications where robust fastening is crucial. Here’s a simple introduction to their application:

A194 2HM nuts, known for their durability and strength, are extensively utilized in heavy-duty applications. Whether in construction, machinery, or Save infrastructure projects, these nuts play a critical role in securely fastening components together. Their medium carbon steel construction (C45) and controlled tempering process result in a hardness range of 159-237, making them ideal for environments where toughness and resilience are paramount. From large-scale structures to machinery assembly, A194 2HM nuts contribute to reliable and steadfast connections in various industries.

These nuts are often employed in flange connections, where they help secure the flange to the pipe or equipment by applying the necessary clamping force. By using A194 heavy hex nuts in combination with A193 B7 studs or bolts, engineers can ensure reliable and robust connections that can withstand high stress and temperature variations.