Njabulo Stainless, based in Cape Town, South Africa, is a trusted manufacturer and supplier of Stainless Steel XM19 Nuts. These high-quality nuts are designed to provide secure, durable, and reliable fastening when paired with bolts, studs, and other fasteners. Njabulo Stainless ensures precise threading, smooth surfaces, and uniform dimensions, delivering strong and leak-proof connections for industrial and structural applications. Stainless Steel XM19 nuts are widely used in marine, aerospace, petrochemical, and power generation industries, where high corrosion resistance, mechanical strength, and heat tolerance are essential for long-lasting performance and safety.
Stainless Steel XM19 Nuts are made from high-nickel austenitic stainless steel XM19, containing nickel (18–20%), chromium (17–19%), and molybdenum (3–4%). This composition provides excellent corrosion resistance, high tensile strength, and toughness, making them suitable for harsh and corrosive environments. Mechanically, XM19 nuts offer dimensional stability, resistance to stress corrosion cracking, and reliable load-bearing capacity. Precision manufacturing ensures accurate threading and consistent dimensions, allowing secure and tight fastening. These properties make XM19 nuts ideal for critical assemblies in marine, chemical, aerospace, and industrial applications requiring durability and high performance.
Material | Specification | Standards | Size | Length |
Stainless Steel XM19 Nuts | ANSI ,DIN,ASME,ASTM | ASTM / ASME – A/ SA 320 | M4-M100(1/4-4 inch) | M02 to M33 |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| XM19 | min. max. | – 0.06 | 4.0 6.0 | – 1.00 | – – | – – | 20.5 23.5 | 1.5-3 | 11.5 13.5 | – |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| XM19 | 100 KSi | 55 KSi | 35% | 55% | 293 |
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Stainless Steel XM19 nuts offer superior strength, corrosion resistance, and durability, ideal for harsh environments and high-stress applications. Their precision and reliability make them essential for demanding engineering and construction projects.
Stainless Steel XM19 Flex Lock Nuts feature a unique design that prevents loosening under vibration. They offer exceptional strength, corrosion resistance, and durability, making them perfect for high-stress applications.
Stainless Steel XM19 K Lock Nuts provide excellent resistance to loosening due to vibrations and dynamic loads. They combine high strength, corrosion resistance, and durability, ideal for demanding and critical applications.
SS XM19 High Nuts offer robust performance with superior corrosion resistance and strength. Their extended height enhances grip and stability in critical applications, making them ideal for demanding and high-stress environments.
XM19 SS Serrated Flange Nuts feature a serrated flange that grips surfaces firmly, preventing loosening under vibration. They provide exceptional strength, corrosion resistance, and stability, ideal for high-stress and dynamic applications
We uphold stringent quality standards for our Stainless Steel XM19 Nuts, subjecting them to rigorous testing. Our extensive tests encompass the Hardness Test, Chemical Analysis via Spector Analysis, PMI Testing, Flattening Test, Micro and Macro Tests, Pitting Resistance Test, Flaring Test, and Intergranular Corrosion (IGC) Test. Commercial invoice, packaging list, Certificate of Origin and Guarantee Letter accompany our nuts. For added assurance, we offer third-party inspection certificates, validating the excellence and suitability of our Stainless Steel XM19 Nuts across various applications and ensuring client satisfaction.
Stainless Steel XM19 Nuts are widely used in marine engineering, chemical and petrochemical plants, aerospace, power generation, and industrial machinery. They are ideal for securing bolts and studs in pipelines, pumps, valves, pressure vessels, structural components, and critical equipment exposed to corrosive, high-stress, or high-temperature conditions. Their superior corrosion resistance ensures long-term durability and reliable performance, even in harsh marine and industrial environments. XM19 nuts provide secure, leak-proof, and high-strength connections in critical applications. Overall, they deliver safety, durability, and superior corrosion resistance, making them essential for demanding industrial, marine, and aerospace projects.
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