DotsFasteners is a trusted and leading Fastener's Manufacturer in India, renowned for delivering premium-quality fasteners that adhere to international and domestic industry standards. We offer a comprehensive range in multiple sizes, materials, and grades to cater to the varying requirements of industrial, construction, and infrastructure sectors.
🔩 Duplex Fasteners Manufacturer, Supplier & Exporter in India
DotsFasteners is one of the leading manufacturers, suppliers, and exporters of Duplex Fasteners in Mumbai, India. We offer a wide range of fasteners including Duplex 2205, Duplex 2507 and other grades like S31803, S32205, S32750, S32760—all engineered for superior strength and resistance to harsh environments.
Our Duplex Steel Fasteners are widely used in automotive, marine, petrochemical, oil & gas, and chemical industries due to their excellent mechanical strength, corrosion resistance, and durability.
✅ Why Choose Duplex Fasteners?
Duplex stainless steels combine the best properties of austenitic and ferritic stainless steels. These fasteners provide:
- Exceptional strength (double that of standard austenitic stainless steels)
- High corrosion resistance (especially in chloride-containing environments)
- Excellent resistance to stress corrosion cracking and fatigue
- Superior cost-to-performance ratio for demanding applications
We are a top-quality Duplex Bolt, Nut, and Washer Manufacturer in India, delivering both standard and custom sizes.
🔧 Range of Duplex Fasteners We Offer
- Duplex Steel Bolts (Hex, U-Bolts, Eye Bolts, Anchor Bolts)
- Duplex Steel Nuts (Hex Nuts, Lock Nuts, Dome Nuts)
- Duplex Screws (Socket Head, Machine, Self-Tapping)
- Duplex Washers (Flat, Spring, Lock, Sealing Washers)
- Studs, Threaded Rods, Socket Screws, Carriage Bolts, Cotter Pins
Threading: UNC, UNF, Metric, BSW, BSF
Finishes: Natural, Black Oxide, Zinc Coated, Hot Dip Galvanized, PTFE Coated
🧪 Duplex Fasteners – Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
|---|---|---|---|---|---|---|---|---|---|---|
| S31803 | 0.030 | 2.00 | 1.00 | 0.030 | 0.020 | 22.0–23.0 | 3.0–3.5 | 4.50–6.50 | 0.14–0.20 | Balance |
| S32205 | 0.030 | 2.00 | 1.00 | 0.030 | 0.020 | 21.0–23.0 | 2.50–3.50 | 4.50–6.50 | 0.14–0.20 | Balance |
| S32750 | 0.030 | 1.20 | 0.80 | 0.035 | 0.020 | 24.0–26.0 | 3.0–5.0 | 6.0–8.0 | 0.24–0.32 | Balance |
| S32760 | 0.05 | 1.00 | 1.00 | 0.030 | 0.010 | 24.0–26.0 | 3.0–4.0 | 6.0–8.0 | 0.20–0.30 | Balance |
📐 Duplex Fasteners Specifications
| Parameter | Details |
|---|---|
| Standards | ASTM, ASME, DIN, BS, IS, and all Intl. Standards |
| Specifications | ASTM A193 / A194, IS 1364, 1367, 3757, 6639 |
| Grades | C276, C22, B2, C-4, C-2000, G, X, S31803, etc. |
| Size Range | M4 to M100 / 3/8″ UNC to 4″ UNC |
| Length | Up to 1 meter |
| Forms Available | Nuts, Bolts, Washers, Screws, Studs, Threaded Rods |
🏭 Industries We Serve
- 🛢️ Oil & Gas Refineries
- 🏗️ Construction & Infrastructure
- 🧪 Chemical & Petrochemical Plants
- ⚓ Marine and Shipbuilding
- 🚀 Aerospace & Defense
- 🚗 Automobile Industry
- 🧬 Nuclear & Energy Sectors
🌐 Duplex Fasteners Export & Supply Network
🌏 Indian Cities We Supply:
Mumbai | Delhi | Chennai | Pune | Hyderabad | Ahmedabad | Bangalore | Coimbatore | Rajkot | Surat | Indore | Nagpur | Vadodara | Ludhiana | Kochi | Jaipur | Nashik | and more
🌍 Countries We Export To:
USA | UK | UAE | Saudi Arabia | Qatar | Oman | Germany | France | Poland | Nigeria | South Africa | Sri Lanka | Australia | Canada | New Zealand | Mexico | China | Japan | Turkey | Iran | Belgium | Brazil | Italy | and many others
📦 Duplex Fasteners – Packaging & Delivery
- Packing Options: Palletized wooden crates, small boxes, custom-labeled cartons
- Port of Dispatch: Mumbai, Kalamboli – Maharashtra
- Payment Modes: LC, TT, Cheque, and other options
- GST: 18% (India)
Contact Form
Contact Us
India
- Gat No. 358, Kharabwadi, WMDC, Behind BSNL tower, Ambethan road , Chakan -410501, Pune, Maharastra, India.
- 02135298002
- 9226549001/03
- marketing@dotsfasteners.com
- www.dotsfasteners.com