Hardness testing to ISO 6508-1
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Vision Alloys is a trusted SS 321 fastener manufacturer and a leading stainless steel 321H nut bolt supplier in India. We offer a wide variety of 321 stainless steel fasteners, such as nuts, bolts, washers, screws, and studs, all made for high-strength and high-temperature uses. Our Stainless Steel 321H fasteners are well known for their exceptional tensile strength, endurance, and resistance to corrosion. These fasteners are made to meet international quality standards, making them perfect for industries like aerospace, chemical processing, and heat exchangers.
Stabilized austenitic stainless steel alloys, such as SS 321 and 321H fasteners, are made up of 17–19% chromium, 9–12% nickel, and titanium. This makes them more resistant to intergranular corrosion. The 321H grade contains more carbon, which boosts its strength in high-temperature settings. 321 stainless steel bolts, nuts, and washers are excellent for oxidation-resistant applications, especially at temperatures reaching up to 900°C.
We produce 321 stainless steel nuts and bolts using top-notch raw materials, guaranteeing dependability even in tough conditions. The mix of metals like chromium, nickel, titanium, carbon, manganese, silicon, and phosphorus gives it useful resistance to crevice corrosion, stress corrosion cracking, and pitting. These fasteners work suitably for heat-resistant applications in fields like petrochemical, oil and gas, and power generation.
Our SS 321 fasteners meet the requirements of ASTM A193, ASTM A194, ASTM A320, ASME SA193, ASME SA194, and various DIN standards, including DIN 933, DIN 931, and DIN 934. We provide 321, 321H, and tailored grades to suit specific industry requirements.
We provide 321 stainless steel bolts, nuts, and screws in both standard and custom sizes. Our products come in various schedules from SCH 10 to SCH 80, with dimensions ranging from M6 to M42 or 1/4” to 1-1/2” in diameter. We give custom lengths and widths to guarantee a perfect fit for your industrial needs.
At Vision Alloys, we focus on secure packaging, using wooden boxes, plastic wraps, and bubble wraps to prevent damage during transit. With fast domestic and international delivery, we meet time-sensitive project demands efficiently. As a top stainless steel 321 nuts and bolts supplier in Mumbai, India, and a reliable SS 321 fastener exporter to the United States, we guarantee high-quality 321/321H fasteners that adhere to strict industry standards. Contact us today for competitive stainless steel 321 fastener prices and a dependable supply of SS 321 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 | EN |
SS 321 | 1.4541 | S32100 | SUS 321 | X6CrNiTi18-10 |
Grade | C | Mn | Si | P | S | Cr | N | Ni | T |
SS 321 | 0.08 max | 2.0 max | 1.0 max | 0.045 max. | 0.030 max | 17.00 - 19.00 | 0.10 max | 9.00 - 12.00 | 5(C+N) – 0.70 max |
Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
8.0 g/cm3 | 1457 °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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