Hardness testing to ISO 6508-1
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Vision Alloys is a leading SS 347 fastener manufacturer and a trusted stainless steel 347H nut bolt supplier in India. We provide a diverse selection of 347 stainless steel fasteners, such as nuts, bolts, washers, screws, and studs, all crafted for high-performance use. Our Stainless Steel 347H fasteners are recognized for their outstanding corrosion resistance, impressive high-temperature strength, and long-lasting durability. These fasteners meet international quality standards and are commonly used in the aerospace, power generation, and chemical processing industries.
Stable austenitic stainless steel alloys containing 17–20% chromium, 9–13% nickel, and columbium (niobium) make up the SS 347 and 347H fasteners. This helps them resist intergranular corrosion better. The 347H grade features a higher carbon content, which enhances its strength in high-temperature settings, reaching up to 1000°C. These 347 stainless steel bolts, nuts, and washers are perfect for resisting oxidation in tough industrial environments.
We manufacture 347 stainless steel nuts and bolts using premium raw materials, ensuring superior mechanical and corrosion-resistant properties. The alloy's ingredients—chromium, nickel, columbium, carbon, manganese, silicon, and phosphorus—make it very resistant to cracking, stress corrosion, crevice corrosion, and pitting. These fasteners are perfect for heat exchangers, furnace components, and refinery equipment.
Our SS 347 fasteners meet the standards set by ASTM A193, ASTM A194, ASTM A320, ASME SA193, ASME SA194, as well as DIN specifications like DIN 933, DIN 931, and DIN 934. We offer grades 347 and 347H to meet different industrial needs.
We offer 347 stainless steel bolts, nuts, and screws in both standard and custom sizes, with schedules available from SCH 10 to SCH 80. Common sizes range from M6 to M42 or 1/4” to 1-1/2” in diameter, and you can also request custom lengths and widths to suit your specific application needs.
At Vision Alloys, we ensure secure packaging, using wooden boxes, plastic wraps, and bubble wraps to prevent transit damage. We provide fast domestic and international delivery, ensuring that urgent project demands are met promptly. As a top stainless steel 347 nuts and bolts supplier in Mumbai, India, and a leading SS 347 fastener exporter to the United States, we guarantee superior-quality 347/347H fasteners that meet strict industry standards. Contact us today for competitive SS 347 fastener prices and a reliable supply of SS 347 bolts, nuts, screws, and washers for your projects.
Specifications | ASTM A193 / ASME SA 193 |
Standard | DIN, ISO ,JIS ,GB, IS, BS, ASTM and all International Standards |
Size | M3 to M90 |
Length | 10mm to 1000mm |
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. |
To preserve the high standards of our selection of industrial fasteners, we have always adhered to a systematic quality management process.
Our staff of experts is vibrant and talented, and they have always been our largest supporters and contributors to our success. Our vision is to create a world of fasteners.
STANDARD | WERKSTOFF NR. | UNS | JIS | GOST | EN |
SS 347 | 1.4550 | S34700 | SUS 347 | 08Ch18N12B | X6CrNiNb18-10 |
Grade | C | Mn | Si | P | S | Cr | CB | Ni | Fe |
SS 347 | 0.08 max | 2.0 max | 1.0 max | 0.045 max. | 0.030 max | 17.00 - 20.00 | 10xC – 1.10 | 9.00 - 13.00 | 62.74 min |
Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
8.0 g/cm3 | 1454 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
Hardness testing to ISO 6508-1
Nut proof load testing to ISO 898-2
Suitability for preloading to EN 14399-2
Calibrated gauges and tools
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