ASTM A453 GR 660C Bolts, ASTM A453 GR 660C Stud Bolts, Heavy Hex Bolts & 660C Bolting Supplier in Mumbai, India
Unifit Metal Alloys is a manufacturer, supplier, stockist and exporter of ASTM A453 GR 660C Bolts in Mumbai, India, supplying high-strength stainless steel bolting components for pressure equipment, valves, flanges, piping assemblies and demanding industrial applications. Grade 660C is a precipitation-hardening austenitic stainless steel grade intended for fastening applications where high mechanical strength and dependable service performance are required. We supply different diameters, lengths, thread forms and configurations for standard as well as customized requirements.
ASTM A453 GR 660C Bolts are manufactured through controlled processing and heat treatment to achieve the required strength characteristics for heavy-duty bolted connections. The precipitation-hardening structure allows these fasteners to deliver strong clamping performance under demanding loads and elevated operating conditions. Their stainless steel construction also provides useful resistance to corrosion and oxidation, supporting long-term service in challenging industrial environments.
ASTM A453 GR 660C Bolts, ASTM A453 GR 660C Stud Bolts, Heavy Hex Bolts & 660C Bolting Manufacturer and Supplier in Mumbai, India
These bolts are commonly used in power-generation plants, turbines, petrochemical facilities, refineries, pressure vessels, heat exchangers, high-temperature piping, chemical-processing equipment and heavy engineering machinery. They are suitable for critical fastening applications where high strength, corrosion resistance and stable joint performance are important.
At Unifit Metal Alloys, we supply ASTM A453 GR 660C Bolts in various sizes, lengths, thread configurations and surface finishes. We cater to maintenance requirements, fabrication work, bulk orders and industrial projects.
Get the Best Quote for ASTM A453 GR 660C Bolts. We Stock ASTM A453 GR 660C Bolts in Various Diameters, Lengths, Thread Sizes, Specifications and Surface Finishes. Contact Us Today for a Competitive Quote.
ASTM A453 GR 660C Bolts Specifications
| Material | Precipitation-Hardening Austenitic Stainless Steel |
|---|---|
| Grade | ASTM A453 Grade 660C |
| Standard | ASTM A453 / ASME SA453 |
| Equivalent Grade | UNS S66286 / Alloy A-286 / Grade 660 |
| Product Type | Hex Bolts, Heavy Hex Bolts, Stud Bolts, Screws, Threaded Rods and Custom Fasteners |
| Class | Class C |
| Size Range | M6 to M100 | 1/4″ to 4″ | Custom Sizes Available |
| Length | 10 mm to 1000 mm | Custom Lengths Available |
| Thread Standard | UNC, UNF, UNEF, Metric, BSW, BSF and Custom Threads |
| Manufacturing Process | Forged, Rolled, Machined and Thread Rolled |
| Heat Treatment | Solution Treated, Oil Quenched and Double Age Hardened |
| Finish | Plain, Passivated, Polished and Custom Finishes |
| High-Temperature Service | Suitable for High-Temperature Bolting Applications |
| Corrosion Resistance | Excellent Resistance to Oxidation and Corrosive Environments |
| Application | Pressure Vessels, Valve Flanges, Aerospace, Gas Turbines, Power Generation, Petrochemical, Chemical Processing and High-Temperature Industrial Equipment |
| Packaging | Cartons, Wooden Cases, Pallets, Bulk and Custom Packaging |
Chemical Composition for ASTM A453 GR 660C Bolts
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.08 max. |
| Manganese (Mn) | 2.00 max. |
| Silicon (Si) | 1.00 max. |
| Phosphorus (P) | 0.040 max. |
| Sulfur (S) | 0.030 max. |
| Nickel (Ni) | 24.00 – 27.00 |
| Chromium (Cr) | 13.50 – 16.00 |
| Molybdenum (Mo) | 1.00 – 1.50 |
| Titanium (Ti) | 1.90 – 2.35 |
| Aluminum (Al) | 0.35 max. |
| Vanadium (V) | 0.10 – 0.50 |
| Boron (B) | 0.001 – 0.010 |
| Iron (Fe) | Balance |
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Mechanical Properties of ASTM A453 GR 660C Bolts
| Property | ASTM A453 Grade 660C |
|---|---|
| Tensile Strength | 965 MPa min. |
| Yield Strength (0.2% Offset) | 585 MPa min. |
| Elongation | 20% min. |
| Reduction of Area | 30% min. |
| Hardness | 302 HBW max. |
Ready Stock of ASTM A453 GR 660C Bolts
ASTM A453 GR 660C Bolts Application Industries
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