Mitchell Stainless, a trusted manufacturer and supplier in Hamilton, New Zealand, provides premium Stainless Steel 17-7 PH fasteners designed for high-strength and corrosion-resistant applications. This precipitation-hardening stainless steel offers excellent mechanical properties, including high tensile strength, hardness, and toughness, making it ideal for demanding industrial, aerospace, and marine applications. Mitchell Stainless ensures that each fastener meets strict quality standards, providing precise dimensions, consistent performance, and long-term reliability. These fasteners are engineered to deliver strong, durable, and corrosion-resistant fastening solutions in applications where both strength and environmental resistance are critical.
Stainless Steel 17-7 PH fasteners are composed primarily of iron, with 16–18% chromium, 6–7% nickel, 0.5–0.7% copper, and small amounts of manganese, silicon, and carbon. This combination provides exceptional strength, hardness, and corrosion resistance after precipitation hardening. Chromium and nickel ensure resistance to oxidation and environmental corrosion, while copper enhances mechanical properties. These fasteners maintain high tensile and yield strength, making them suitable for structural, mechanical, and high-stress applications in harsh industrial, marine, and aerospace environments.
| Property | 17-7 PH |
| Density, lb/in3 | 0.282 |
| Modulus of Elasticity, psi | 29 x 106 |
| Coefficient of Thermal Expansion, 68-212˚F, /˚F | 8.5 x 10-6 |
| Thermal Conductivity, Btu/ft hr ˚F | 9.5 |
| Specific Heat, Btu/lb ˚F | 0.11 |
| Electrical Resistivity, Microohm-in | 31.5 |
| Element | 17-7PH |
| Carbon | 0.09 |
| Chromium | 16.0-18.0 |
| Nickel | 6.5-7.7 |
| Manganese | 1.00 |
| Silicon | 1.00 |
| Aluminum | 0.75-1.50 |
| Phosphorus | 0.040 |
| Sulfur | 0.030 |
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Corrosion-resistant and durable, these nuts are commonly used in aerospace and industrial applications. They typically come in sizes ranging from M2 to M48 and can be used with various bolt sizes, providing strong clamping force and resistance to wear.
These stud bolts offer excellent corrosion resistance and high strength. Available in sizes from M6 to M30, they are used for applications requiring precise alignment and robust mechanical properties. The 17-7 PH alloy ensures durability under stress and high temperatures.
Stainless Steel 17-7 PH bolts offer superior corrosion resistance and high tensile strength, making them perfect for demanding environments. Available in sizes from M4 to M36 and various lengths, they are ideal for aerospace and structural applications. Their hardness and resistance ensure reliability and durability in critical applications.
Highly resistant to corrosion, these rods are used in applications where strength and durability are crucial. Sizes range from M6 to M30 with varying lengths. They provide excellent mechanical properties and are suitable for fastening and structural support.
Offering exceptional corrosion resistance, these screws are used in high-stress environments. They are available in sizes from M2 to M20 and are suitable for precision applications. Their high strength and durability make them ideal for aerospace and mechanical assemblies.
These washers provide excellent corrosion resistance and are used to distribute loads evenly. They come in sizes from M2 to M50 and are commonly used with 17-7 PH fasteners to enhance performance in high-stress and high-temperature environments.
All orders for our Stainless Steel 17-7 PH Fasteners are accompanied by essential documentation such as a commercial invoice, packing list, fumigation certificate, heat treatment chart, quality assurance plan, and NABL-approved lab test report. These documents give authenticity and quality superiority of the fasteners and comfort to the customer regarding the use. Besides, we offer different test certificates for our Stainless Steel 17-7 PH Fasteners such as MTC as per EN 10204/3.1b, PMI Test Certificate, 100% radiography test report, and Third Party Inspection Certificate against our commitment towards the product and customer excellence.
Stainless Steel 17-7 PH fasteners are widely used in aerospace, marine, petrochemical, and high-performance industrial applications where high strength and corrosion resistance are critical. Typical applications include bolts, screws, nuts, and fasteners for aircraft components, precision machinery, valves, and structural assemblies. They are also used in maintenance and repair projects requiring durable, high-strength, and corrosion-resistant fastening solutions. In New Zealand’s industrial and fabrication sectors, 17-7 PH fasteners are valued for producing reliable, long-lasting assemblies capable of withstanding mechanical stress, environmental corrosion, and demanding operational conditions.
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