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At Rinku Fasteners, we proudly manufacture and supply high-performance ASTM A453 GR 660 Class D Fastenersdesigned to excel in demanding industrial environments. Based in Kolkata, India, we focus on delivering products that combine exceptional strength, temperature resistance, and long-term durability. These fasteners are engineered to perform reliably in high-pressure and high-temperature applications, making them a preferred choice for critical operations. With our commitment to precision manufacturing, strict quality standards, and customer-focused service, we ensure that industries receive fastening solutions that enhance efficiency, safety, and overall system performance, even under extreme operating conditions.
ASTM A453 GR 660 Class D Fasteners are produced from a heat-treated, age-hardened nickel-chromium alloy enhanced with titanium, molybdenum, and manganese. This specialized composition provides outstanding tensile strength, high yield strength, and excellent resistance to thermal fatigue. Class D fasteners undergo solution treatment and aging, enabling superior creep resistance, stress-rupture strength, and dimensional stability at elevated temperatures. They maintain hardness and mechanical integrity under continuous thermal cycling and intense pressure. Their oxidation resistance and reliability under harsh service conditions make them ideal for long-term, high-temperature applications.
Material | Dimensions | Standards | Size | Length |
ASTM A453 GR 660 CLASS D Fasteners | ASME B18.2.1, B18.3 | ASTM, ASME | M 02 to M 160 | 3 mm to 200 mm |
|
Element |
Content |
|---|---|
|
Carbon |
0.08 max |
|
Manganese |
2.00 max |
|
Phosphorus, max |
0.040 max |
|
Sulfur, max |
0.030 max |
|
Silicon |
1.00 max |
|
Nickel |
24.0-27.0 |
|
Chromium |
13.5-16.0 |
|
Molybdenum |
1.00-1.50 |
|
Tungsten |
– |
|
Titanium |
1.9-2.35 |
|
Aluminum |
0.35 max |
|
Vanadium |
0.10-0.50 |
|
Boron |
0.001-0.010 |
| Tensile Strength/Ultimate Tensile Stress (UTS) – (Mpa) | 895 min |
| Yield Strength/Proof Stress(0.2% Offset) (YS) – (Mpa) | 585 min |
| Elongation in 4D (El) | 15 |
| Reduction | 18 |
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.
ASTM A453 GR 660 Class D Fasteners are widely used in industries that depend on exceptional high-temperature and high-pressure performance. Power generation plants rely on them for steam turbines, boiler components, and turbine casings. In petrochemical and refinery sectors, they are used in cracking units, reactors, and high-pressure piping systems exposed to extreme heat. These fasteners also serve critical roles in gas processing equipment, nuclear power facilities, and aerospace components requiring long-term mechanical stability. Heavy industrial machinery, furnaces, and thermal processing units benefit from their ability to withstand severe thermal stress, ensuring safe and secure fastening under extreme conditions.
At Rinku Fasteners, we prioritize the safety and quality of our ASTM A 453 GR 660 Class D fasteners with careful packaging. Each binder is carefully inspected and individually wrapped to protect against corrosion. They are then placed in tightly labeled boxes with detailed product details and quantities. Our packaging materials ensure that fasteners are adequately protected during transit, and maintain their high strength and integrity for use in critical, high-temperature 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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