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Based in the thriving industrial hub of Kolkata, Rinku Fasteners is a trusted manufacturer and supplier of high-quality Stainless Steel 17-7 PH Bolts. Serving clients across India, the company blends technical precision with a friendly, customer-focused approach. Each bolt is crafted with care, ensuring excellent strength, reliability, and long-term performance in demanding environments. Rinku Fasteners values real relationships as much as strong products, listening to customer needs and delivering solutions that stand up to everyday challenges. Their Stainless Steel 17-7 PH Bolts reflect consistent craftsmanship, durability, and a genuine commitment to quality.
Stainless Steel 17-7 PH Bolts are produced from a precipitation-hardening alloy containing chromium, nickel, and aluminum, giving them impressive strength and corrosion resistance. Their composition allows for controlled heat treatment, resulting in high tensile and yield strength along with excellent fatigue resistance. These bolts maintain stability under stress, resist deformation, and perform reliably even in elevated temperatures. Their mechanical profile includes strong hardness levels, good ductility, and consistent performance in both static and dynamic loading conditions. This balanced combination makes them ideal for environments requiring dependable, long-lasting fastening strength.
| 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 |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Stainless Steel 17-7 PH Bolts are widely used in industries where high strength, corrosion resistance, and stability under heat are essential. They are commonly found in aerospace assemblies, precision instruments, chemical processing equipment, and structural components exposed to variable stresses. Their durability makes them suitable for springs, valves, pumps, and mechanical systems requiring consistent performance over long cycles. These bolts also excel in marine, automotive, and high-pressure industrial environments due to their resistance to fatigue and thermal effects. Engineers value Stainless Steel 17-7 PH Bolts for their reliability, ease of installation, and ability to maintain integrity in demanding applications.
Stainless steel 17-7 PH bolts go through rigorous quality control to ensure outstanding performance. These tests include hardness testing, chemical analysis through Spectro analysis, material quality certification through PMI testing, tensile strength testing, impact testing and fatigue resistance testing in addition to evaluating the corrosion resistance of each bolt. This thorough inspection assures that our 17-7 PH bolts meet the highest industry standards for strength, durability and reliability, ensuring exceptional efficiency in demanding applications.
Rinku Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kolkata, India, with over 8 years of experience serving global industries.
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