Weston Stainless, a Midland, UK-based company, is a prominent provider of high-grade stainless steel products, providing an extensive array of industrial solutions with a focus on precision and longevity. Among its high-end products, Stainless Steel 17-4 PH Fasteners are popular because of their superior strength, corrosion resistance, and better mechanical properties. These fasteners, which come in many forms like bolts, nuts, screws, washers, and studs, are made of 17-4 PH stainless steel, a precipitation-hardening alloy with high hardness and toughness. These fasteners are best suited for aerospace, marine, and industrial uses that demand high performance and reliability.
Stainless Steel 17-4 PH Fasteners consist of iron, 15-17.5% chromium, 3-5% nickel, 3-5% copper, 0.07% carbon, 0.15-0.45% niobium, and trace amounts of manganese, silicon, phosphorus, and sulfur. They are mechanically provided with a tensile strength of 930-1310 MPa, yield strength of 520-1180 MPa, and elongation of 10-20%, depending on heat treatment. Their hardness is HRC 28-44. They are physically dense at 7.75 g/cm³, with a melting point of 1400°C and high corrosion resistance. These characteristics render them appropriate for applications in high-stress aerospace, marine, and industrial environments.
| 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 | Cb+Ta | Cr | Cu | Fe | Mn | Ni | P | S | Si |
| SS 17-4 PH | 0.07 max | 0.15-0.45 | 15.00-17.50 | 3.00-5.00 | Bal | 1.0 max | 3.0-5.0 | 0.40 max | 0.03 max | 1.0 max |
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Excellent corrosion resistance, Stainless Steel 17-4 PH nuts are typically used in aerospace and industrial applications. They come in various sizes. Usually, the dimensions are M2 to M36 and conform to standard nut sizes.
Ideal for high-stress environments and offer high corrosion resistance. Depending on application requirements, they are available in sizes ranging from M4 to M30, with lengths varying from 20mm to 1000mm.
Strong corrosion resistance and are commonly used in structural applications. Available in sizes from M5 to M36, with standard lengths ranging from 10mm to 200mm, they meet various industrial and military standards.
Excellent corrosion resistance, 17-4 PH threaded rods are used in high-strength applications. They are available in diameters from M6 to M36 and lengths from 100mm to 3000mm, suitable for various structural needs.
High corrosion resistance, 17-4 PH screws are suitable for harsh environments. They come in sizes from M2 to M16, with lengths from 6mm to 100mm, meeting diverse application standards.
Highly corrosion-resistant, making them ideal for marine and aerospace applications. Available in diameters from M3 to M36, they come in various thicknesses to fit different bolt sizes.
Stainless Steel 17-4 PH Fasteners are utilized extensively in applications with high strength, corrosion resistance, and durability. In aerospace, they are crucial in structural elements, landing gear, and engine components. They are highly resistant to corrosion in seawater conditions and therefore suitable for shipbuilding and offshore structures. In the oil and gas sector, they find usage in pipelines, valves, and drilling equipment owing to their superior mechanical characteristics. They are also used in automotive, chemical, and food processing industries to provide safe and durable connections in high-temperature and high-pressure conditions.
Stainless Steel 17-4 PH Fasteners are shipped along with test certificates like Mill Test Certificates (MTC) to EN 10204/3.1, third-party inspection reports, and raw material test reports in order to ascertain quality specifications. They are packaged securely in wooden boxes, cartons, or shrink-wrapped bundles in order to avoid transit damage. Delivery is prompt and managed effectively in order to accommodate global industrial needs while maintaining product quality and safety.
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