Harsh Metalloys is a reputable manufacturer and supplier of Stainless Steel 316H Nuts based in Mumbai, India. Designed for high-temperature and high-pressure environments, SS 316H is a high carbon version of 316 stainless steel, offering improved strength and creep resistance. These nuts are widely used in applications that require superior durability and corrosion resistance in harsh environments. We provide 316H nuts in various sizes, threads, and finishes, manufactured in compliance with international standards such as ASTM A194 and ASME specifications. At Harsh Metalloys, we ensure precision engineering, timely delivery, and high-performance fastening solutions for diverse industrial sectors.
Stainless Steel 316H Nuts consist of 16–18% Chromium, 10–14% Nickel, 2–3% Molybdenum, and a higher carbon content (0.04–0.10%), enhancing strength at elevated temperatures. This grade offers a tensile strength of around 515 MPa and yield strength of 205 MPa. The addition of molybdenum increases resistance to pitting and crevice corrosion in chloride-containing environments. 316H also offers excellent creep, stress-to-rupture, and tensile strength at elevated temperatures, making it suitable for heat exchangers and pressure vessel components. These nuts perform reliably under thermal cycling and oxidizing conditions.
| 316H | Min | 0.04 | 0.04 | 0 | – | – | 16.0 | 2.00 | 10.0 | – | |
| max | 0.10 | 0.10 | 0.75 | 0.045 | 0.03 | 18.0 | 3.00 | 14.0 | – | – | – |
| Grade | Tensile Str (MPa) min | Yield Str 0.2% Proof (MPa) min | Elong (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 316H | 515 | 205 | 40 | 95 | 217 |
| Material | Specification | Standards | Size | Length |
| Stainless Steel 316H Nuts | IS BS ASTM | ASTM / ASME – A/ SA 193 / 193 | 3 mm to 200 mm | M02 to M33 |
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Corrosion-resistant product ideal for harsh environments. Stainless Steel 316H Nuts are available in sizes from M6 to M36, designed for high-temperature and marine applications, offering durability and reliable performance.
Stainless Steel 316H Coupling Nuts are perfect for joining threaded rods in extreme conditions. Sizes range from M6 to M36, suitable for use in chemical processing, marine environments, and high-temperature applications.
Featuring a nylon insert for secure connections, Stainless Steel 316H Nylon Insert Nuts prevent loosening under high temperatures. Available in sizes from M6 to M24, they are ideal for machinery and industrial applications.
Stainless Steel 316H Flange Hex Nuts provide enhanced load distribution with integrated flanges. Available in sizes from M6 to M24, they are used in heavy-duty equipment and construction projects, offering stability and strength.
Designed for high-stress environments, Stainless Steel 316H Heavy Hex Nuts offer superior strength and durability. Sizes range from M6 to M36, making them suitable for boilers, heat exchangers, and other demanding applications.
Stainless Steel 316H Square Nuts feature a large surface area for effective torque application. Available in sizes from M6 to M24, they are ideal for secure fastening in tight spaces and various industrial settings.
Stainless Steel 316H Nuts are widely used in petrochemical plants, power generation units, offshore platforms, and heat exchanger assemblies due to their enhanced strength and corrosion resistance. Their high carbon content makes them suitable for elevated temperature applications in boiler systems, oil refineries, and high-pressure processing equipment. These nuts are also used in food processing units, pharmaceutical manufacturing, and pulp & paper industries. With excellent mechanical and corrosion-resistant properties, SS 316H nuts ensure long-term durability in harsh operating environments. Harsh Metalloys offers custom sizing and threading to meet the exact needs of clients across various industrial applications.
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