| Size | M6 to M24 |
|---|---|
| Type | Bolt, Nut, Screw, Washer, Rivet, Threaded Rod, Studs, Coated, Nails, Custom Fasteners |
| Standard | Din, Iso, Jis, Gb, Is, Bs, Astm |
| Length | 60 mm |
| Material | Stainless Steel, Monel, Inconel, Incoloy, Hastelloy, Nickel, Silicon Bronze, Phosphor Bronze |
Duplex Fasteners manufactured in India for oil gas chemical processing marine and high strength industrial applications
Sagar steel Corporation is a reputed Duplex Fasteners Manufacturer in India, who provides high quality fasteners that have high strength and are used in applications where high corrosive resistance and mechanical performance are required. Duplex fasteners are made using alloy duplex stainless steel which combines both austenitic and ferritic structures which provide greater strength and much greater resistance to stress corrosion cracking. The common types of these fasteners are used in oil and gas, offshore, marine, chemical processing, power generation and infrastructure markets.
Our worldwide B2B portal provides our customers with precision-manufactured duplex fasteners at a reasonable cost to those who are interested in quality, material consistency, and timely delivery. We have duplex bolt, nut, screw, stud, and washer in all sizes, thread form and finishes to suit the engineering and fabrication requirements of the many. All the duplex fasteners are produced under a close supervision of quality and are tested to guarantee the accurate dimensional precision, mechanical strength, and requirements of international standards.
Duplex Fasteners – Material & Grade Table
| Material | Grade / Specification | UNS No. | Key Properties | Applicable Standards |
|---|---|---|---|---|
| Duplex Stainless Steel | Duplex 2205 | S32205 / S31803 | High strength, excellent corrosion resistance | ASTM A182 / A479 |
| Duplex Stainless Steel | Duplex 2304 | S32304 | Good corrosion resistance, cost-effective | ASTM A182 |
| Super Duplex Stainless Steel | Super Duplex 2507 | S32750 | Superior pitting & crevice corrosion resistance | ASTM A182 |
| Super Duplex Stainless Steel | Zeron 100 | S32760 | High PREN, offshore-grade performance | ASTM A182 |
| Lean Duplex Steel | LDX 2101 | S32101 | High yield strength, good weldability | ASTM A182 |
Duplex Fasteners – Types, Sizes & Availability Table
| Fastener Type | Size Range | Thread Standard | Finish | Minimum Order Quantity | Available Cities |
|---|---|---|---|---|---|
| Bolts | M6 – M72 | Metric / UNC / UNF | Pickled / Passivated | 200 Pcs | Mumbai, Pune |
| Nuts | M6 – M72 | Metric / UNC / UNF | Pickled / Passivated | 200 Pcs | Chennai, Ahmedabad |
| Screws | M3 – M36 | Metric | Pickled / Passivated | 200 Pcs | Delhi, Hyderabad |
| Stud Bolts | M10 – M80 | Metric / UNC | Pickled / Passivated | 200 Pcs | Bangalore, Coimbatore |
| Washers | M6 – M72 | DIN / ISO | Pickled / Passivated | 200 Pcs | Surat, Kolkata |
- Greater mechanical strength as compared to conventional stainless steel fasteners.
- Very good pitting and stress corrosion cracking resistance.
- Performs well in marine and chloride environment.
- Can be used in high pressure and structural applications.
- Extensive service with minimal maintenance needs.
Duplex fasteners have these characteristics that render it a reliable choice in critical industrial fastening systems.
Besides duplex fasteners, we also offer Hastelloy Fasteners, Titanium Fasteners as well as Copper Fasteners and allow buyers to obtain a number of high performance fastening materials under a single quality manufacturer.
Type of Sub-products

Duplex Nuts Duplex Nuts
Heavy duty threaded nuts designed to pair with duplex bolts for high strength fastening. Excellent for high pressure pipelines, offshore structures, and industrial tanks where joint integrity is critical.

Duplex Hex Bolts Duplex Hex Bolts
Engineered with a six sided head and manufactured from S31803/S32205 duplex stainless steel, these bolts provide superior mechanical strength and corrosion resistance. Common in structural assemblies, chemical plants, and oil refineries.
