Vinit Stainless, a renowned manufacturer and supplier of stainless steel 409 nuts with headquarters in Chennai, India, provides strong and affordable fastening solutions for a range of industrial applications. Our SS 409 nuts are expertly crafted with premium raw materials and state-of-the-art equipment, guaranteeing superior strength, resistance to oxidation, and sustained performance in hot conditions. These nuts are perfect for heat exchangers, structural assemblies, and automobile exhaust systems. Vinit Stainless is dedicated to providing customers in India and abroad with products that satisfy global quality standards, backed by effective logistics, prompt delivery, and affordable prices.
The ferritic stainless steel alloy used to make Stainless Steel 409 Nuts has a low carbon content and roughly 10.5–11.75% chromium, with trace amounts of titanium and nitrogen. Particularly at high temperatures, this composition improves resistance to oxidation and corrosion. SS 409 offers a moderate yield strength of roughly 170–200 MPa and a tensile strength of about 380–450 MPa. Compared to austenitic grades, it has limited corrosion resistance but good formability and weldability. Because of their durability and resistance to heat, these nuts can be used in situations involving mild corrosion and heat stress.
| 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.
Applications requiring moderate corrosion resistance and high-temperature performance are the main uses for stainless steel 409 nuts. Because of their superior oxidation resistance, they are frequently used in heat shields, catalytic converters, mufflers, and automotive exhaust systems. Additionally, structural assemblies in industrial plants, fuel tanks, HVAC systems, and agricultural equipment all use SS 409 nuts. They are a sensible option for fastening components in hot environments because of their affordability and robustness. They also offer a balance between economy and performance for both home and commercial engineering applications, and can be used in moderately corrosive environments.
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