With its main office in Chennai, India, Vinit Stainless is a top producer and supplier of 17-7 PH stainless steel fasteners, offering high-performance fastening solutions for demanding industrial applications. High strength, resistance to corrosion, and dimensional stability under heat treatment are all well-known attributes of these fasteners. Vinit Stainless offers a large selection of 17-7 PH fasteners, such as bolts, screws, nuts, and washers, that are made to satisfy global quality standards and customised to meet client specifications. Vinit Stainless serves the aerospace, petrochemical, defence, and marine industries in India and international markets with a strong emphasis on product integrity, on-time delivery, and customer satisfaction.
About 17% chromium, 7% nickel, and a tiny amount of aluminium (0.75–1.5%) are added to stainless steel 17-7 PH fasteners to improve precipitation hardening. After heat treatment, these austenitic-martensitic stainless steel fasteners have a high yield strength (approximately 758 MPa) and tensile strength (up to 965 MPa). They offer superior fatigue resistance, corrosion resistance on par with 304 stainless steel, and dimensional stability even at high temperatures. 17-7 PH fasteners are perfect for high-load and precision fastening applications in demanding industrial settings because of their good formability and moderate weldability.
| 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.
The aerospace, automotive, marine, defence, and chemical processing industries all heavily rely on stainless steel 17-7 PH fasteners because of their exceptional strength and resistance to corrosion. They are perfect for use in pressure-containing systems, actuators, springs, landing gear parts, and structural assemblies. These fasteners work incredibly well in conditions with moderate corrosion, thermal fluctuations, and cyclic stress. They are appropriate for vital applications like turbine systems, military-grade hardware, and aircraft fittings because of their exceptional fatigue resistance and steady mechanical characteristics under heavy loads. In both normal and harsh environments, 17-7 PH fasteners provide dependable performance and a long service life.
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