Aditya Stainless, a well-respected manufacturer and supplier located in Kolkata, India, specializes in high-strength and durable Stainless Steel 420 Fasteners. These fasteners are perfect for applications that experience significant wear and moderate corrosion. Made from martensitic stainless steel, they are celebrated for their remarkable hardness, excellent polishability, and heat-treatable characteristics. Aditya Stainless is committed to precision manufacturing, ensuring dimensional accuracy and adherence to global quality standards. Trusted by various industries, including engineering, aerospace, automotive, and defense, Aditya’s 420 fasteners are engineered to provide reliable performance in mechanically demanding settings where both strength and moderate corrosion resistance are crucial.
Stainless Steel 420 Fasteners consist of chromium (12–14%), carbon (0.15–0.40%), along with trace amounts of manganese, silicon, phosphorus, and sulfur. The elevated carbon content allows for heat treatment, achieving hardness levels up to 50 HRC, which boosts wear resistance. These fasteners deliver tensile strength ranging from 700–900 MPa, yield strength around 340–500 MPa, and an elongation of about 15%. They showcase excellent hardness, machinability, and fatigue strength, making them suitable for high-load and wear-intensive applications, although their corrosion resistance is not as high as that of austenitic grades.
| Specifications | ASTM A 193 / ASME SA 193 |
| Standard | DIN, ISO ,JIS ,GB, IS, BS, ASTM and all International Standards |
| Size | M3 – M100 | 3/6″ – 4″ | Custom Sizes |
| Fasteners Length | 3 mm – 200 mm | Custom Sizes |
| Nuts Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Washers Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Dimensions | DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3 |
| Threads available | UNF, BSW, BSF, METRIC, UNC, or as required |
| Threads Configuration | ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads |
| Form | Hex, Threading, Square, Round as per Gauge Etc. |
| Head | Hex, Square, Round, Hex flange, Flat, T-head & Triangular etc. |
| Neck type | Hex, Square, Triangular, Oval & Knurled etc. |
| Surface Coating | Black Oxide, Cadmium, Galvanized, Teflon, Xylan, Zinc, Others Upon Request |
| Manufacturing Process | Wire Drawing, Cold Heading, Insert tapping, Heat Treatment, Surface Plating, Inspection, Packing. |
| Grade | C | Mn | Si | P | S | Cr |
| SS 420 | 0.15 max | 1.00 max | 1.00 max | 0.04 max | 0.03 max | 14.0 – 12.0 |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness Rockwell B (HR B) max | Hardness Brinell (HB) max |
| 420 | 480 | 275 | 16 | 95 | 201 |
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Stainless Steel 420 Nuts offer good corrosion resistance in mild environments, making them suitable for various applications. Typically available in sizes ranging from M3 to M24, these nuts provide robust mechanical properties and are often used in low to moderate-corrosive settings.
Stainless Steel 420 Stud Bolts exhibit moderate corrosion resistance, which is ideal for applications where exposure to mild corrosive agents is a concern. Common sizes range from M6 to M30, with lengths from 50mm to 300mm, offering strength and durability in fastening applications.
Stainless Steel 420 Bolts are moderately corrosion-resistant, making them suitable for general use in environments with low corrosive potential. They come in various sizes from M6 to M30 and lengths ranging from 20mm to 200mm, providing reliable performance in diverse applications.
Stainless Steel 420 threaded rods provide moderate corrosion resistance and are suitable for mild corrosive environments. Available in diameters from M6 to M30 and lengths from 100mm to 1000mm, these rods offer flexibility and strength for various industrial and construction applications.
Stainless Steel 420 screws offer good corrosion resistance in less aggressive environments. They are typically available in sizes from M2 to M12 and have lengths ranging from 10mm to 100mm, making them suitable for general-purpose fastening in moderately corrosive conditions.
Stainless Steel 420 washers provide moderate corrosion resistance and are suitable for applications with low corrosive exposure. They come in various sizes, typically from M3 to M24, with thicknesses ranging from 1mm to 5mm, ensuring proper load distribution and stability in fastening systems.
We offer a variety of test certificates for our Stainless Steel 420 Fasteners, including MTC according to EN 10204/3.1b, PMI Test Certificate, 100% Radiography Test Report, and Third Party Inspection Certificate. These certifications attest to the quality, strength and veracity of our fasteners while assuring that our products conform to the requirements of the industry and to the requirements of our clients. Our rigorous testing process and commitment to transparency deliver a reliable and trustworthy experience, giving our valued clients confidence in the superior performance and durability of our Stainless Steel 420 Fasteners across various demanding applications.
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Stainless Steel 420 Fasteners find their place in a variety of applications, including mechanical tools, automotive components, surgical instruments, aerospace parts, and pump and valve assemblies, where high hardness, strength, and wear resistance are essential. They are particularly well-suited for cutting tools, precision machinery, mold assemblies, and high-load mechanical joints. Their ability to achieve a mirror-like finish makes them appealing for aesthetic uses in consumer hardware. While they may not be the best choice for marine or highly corrosive environments, 420 fasteners excel in mildly corrosive settings.
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