Anucha Metals, a top-notch manufacturer and supplier located in Bangkok, Thailand, specializes in high-quality Stainless Steel 409 Nuts that are built to perform reliably in heat-exposed and mildly corrosive settings. Crafted to meet international standards, these nuts are engineered for strength, oxidation resistance, and weldability, all while being budget-friendly. Stainless Steel 409 is a ferritic stainless steel grade that’s popular in automotive and industrial sectors due to its thermal stability and its ability to resist scaling at high temperatures. Anucha Metals offers Stainless Steel 409 Nuts in a variety of sizes and specifications, catering to the automotive, petrochemical, marine, power generation, and construction industries with trustworthy fastening solutions.
These Stainless Steel 409 Nuts mainly consist of iron and chromium (10.5–11.75%), along with carefully controlled amounts of carbon, manganese, silicon, phosphorus, sulfur, and often titanium to enhance stability. This unique composition provides good oxidation resistance, excellent weldability, and stable mechanical properties even under thermal cycling. While they may not be as corrosion-resistant as higher-chromium stainless steels, 409 nuts offer adequate protection in mild atmospheres, exhaust environments, and moderate industrial conditions, striking a practical balance between performance and cost.
| Material | Specification | Standards | Size | Length |
| Stainless Steel 409 Nut | ASTM, ASME and API | ASTM B 193 / ASME SB 193 | M02 to M30 | 3 mm To 200 mm |
| Element | Content |
|---|---|
| Carbon | 0.08 maximum |
| Manganese | 1.00 maximum |
| Phosphorus, maximum | 0.045 maximum |
| Sulfur, maximum | 0.045 maximum |
| Silicon | 1.00 maximum |
| Nickel | 0.5 |
| Chromium | 11.75 |
| Molybdenum | – |
| Tensile Strength/Ultimate Tensile Stress (UTS) – (Mpa) | 450 |
| Yield Strength/Proof Stress(0.2% Offset) (YS) – (Mpa) | 240 |
| Elongation in 4D (El) | 25% min |
| Reduction | – |
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Stainless steel 409 nuts are ideal for high temperature applications. Available in sizes from M6 to M36, they are commonly used in automotive exhaust systems, heat exchanger systems and furnace components to provide durability and moderate corrosion resistance.
The stainless steel 409 coupling nuts are designed to connect the threaded rods in a high temperature environment. Sizes range from M6 to M36, making them perfect for use in automotive and industrial systems that require a combination of durable and durable components.
Featuring a nylon insert for a secure fastening, stainless steel 409 nylon insert nuts are available in sizes from M6 to M24. They offer high strength and moderate corrosion resistance, suitable for automotive and industrial applications.
Stainless steel 409 flange hex nuts for enhanced weight distribution with integrated flange. Available in sizes from M6 to M24, they are ideal for heavy duty vehicles and industrial applications that require durability.
Heavy duty stainless steel 409 heavy hex nuts are designed for high stress environments. Available in sizes from M6 to M36, these nuts are used in industrial machinery and automotive systems requiring high strength and moderate corrosion resistance.
Stainless steel 409 square nuts provide large surface area for efficient torque application. Sizes range from M6 to M24, making them suitable for secure bonding in industrial environments with corrosive softness.
We take great care in packing and shipping our Stainless Steel 409 Nuts securely. Usually, a wooden box with strips is used to secure the nuts, which are packaged in waterproof material. For easy transport, they also feature a lifting point. The documents must be a commercial invoice, certificate of origin, fumigation certificate, heat treatment chart, quality assurance plan, and material testing certificates. In fact, our goal is to get these products into our customers in perfect condition and on time, which guarantees full satisfaction on their part.
You’ll find Stainless Steel 409 Nuts commonly used in automotive exhaust systems, catalytic converters, heat exchangers, furnace assemblies, ducting, industrial machinery, and structural components that face heat and mild corrosion. They’re perfect for securing parts that experience temperature changes, vibrations, and scaling while ensuring mechanical integrity. These nuts promise a long service life in both static and dynamic load situations, providing safe and secure assemblies. With their blend of weldability, heat resistance, and affordability, Stainless Steel 409 Nuts are a go-to choice for industries that need durable fastening solutions in thermal and mildly corrosive environments.
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