Walid Stainless, headquartered in Tunis, Tunisia, is a leading manufacturer and supplier of premium stainless steel products. Among their offerings are Stainless Steel 409 Nuts, designed for applications requiring corrosion resistance, moderate strength, and durability. These nuts are ideal for automotive, industrial, and structural assemblies exposed to mildly corrosive or high-temperature environments. At Walid Stainless, each nut is manufactured with precision and undergoes rigorous quality control to ensure consistent performance. Clients rely on 409 Nuts for secure, reliable, and long-lasting fastening solutions, making them a dependable choice for industrial and automotive projects.
Stainless Steel 409 Nuts are made from a ferritic stainless steel alloy containing approximately 11–12% chromium, with titanium added for stabilization. This composition provides good corrosion resistance, thermal stability, and moderate mechanical strength. The titanium prevents sensitization and improves high-temperature performance. These nuts typically exhibit tensile strength between 450–550 MPa and hardness around 160–200 HB. The ferritic structure ensures dimensional stability, wear resistance, and long-term reliability, making 409 Nuts suitable for automotive, industrial, and structural fastening applications where corrosion resistance and moderate strength are required.
| 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.
Stainless Steel 409 Nuts are widely used in industries requiring corrosion-resistant, heat-stable, and durable fastening solutions. They are ideal for automotive exhaust systems, industrial machinery, pumps, valves, and structural components exposed to moderately corrosive or high-temperature environments. Their titanium-stabilized ferritic structure ensures long-term dimensional stability, mechanical reliability, and resistance to oxidation. Engineers and technicians rely on 409 Nuts for secure, safe, and consistent fastening performance. Walid Stainless guarantees that each nut meets strict quality standards, providing dependable materials for automotive, industrial, and structural projects where corrosion resistance, durability, and reliability are essential.
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