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Punit Fasteners, a prominent manufacturer and supplier located in Delhi, India, specializes in high-quality Stainless Steel 420 Fasteners. These fasteners are celebrated for their exceptional hardness, strength, and resistance to wear. They’re perfect for use in industries like automotive, aerospace, heavy machinery, and tooling, where components need to withstand heavy loads, mechanical wear, and some corrosion. Crafted to meet international standards, Stainless Steel 420 Fasteners promise reliable and long-lasting performance. Punit Fasteners takes pride in delivering precision-engineered products, making these fasteners a trustworthy option for critical industrial and structural assemblies.
Made from a high-carbon martensitic stainless steel alloy with about 12–14% chromium, Stainless Steel 420 Fasteners have elevated carbon levels that allow them to achieve remarkable hardness after heat treatment. They boast a tensile strength between 700–1100 MPa, ensuring they maintain their shape even under significant loads. While they may not resist corrosion as well as austenitic stainless steels, their mechanical strength, hardness, and abrasion resistance make them ideal for demanding fastening applications where durability is key.
| 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 |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Stainless Steel 420 fasteners are used in applications where high strength and corrosion resistance are crucial. They are ideal for automotive components, including engine parts and exhaust systems, as well as in construction and machinery where durability is needed. Their ability to withstand elevated temperatures and resist wear makes them suitable for industrial settings that demand reliable performance. Additionally, these fasteners are used in tools and equipment exposed to moderate corrosive conditions, ensuring longevity and robust functionality.
These fasteners are widely used in industries that require tough, wear-resistant fastening solutions. In the automotive and aerospace fields, they find their place in engines, drivetrain systems, and structural components that endure constant stress and wear. Heavy machinery and tooling manufacturers rely on them for their impressive load-bearing capacity and durability in harsh conditions. Additionally, they’re utilized in pumps, valves, and precision equipment where secure, long-lasting fastening is crucial. These fasteners consistently perform well in environments where standard stainless steels fall short in terms of mechanical strength and wear resistance.
Punit Fasteners is a leading manufacturer and supplier of high-quality fasteners in Delhi, India, with over 15 years of experience serving global industries.
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