India’s diverse climate, especially its intense and prolonged monsoon seasons, creates a real challenge for construction materials—rust and corrosion. For regions like Chennai, Kochi, and Mumbai, where high humidity and coastal exposure are daily realities, choosing the right fastener is critical to a structure’s durability and longevity.
At Screworks, we understand the environmental demands across India. That’s why we manufacture specially coated self-drilling and self-tapping screws, including zinc flake and color-coated finishes, engineered to perform in the most aggressive weather conditions.

Why Coating Matters in Monsoon Weather
Rainwater, salty air, and constant moisture can severely weaken unprotected metal fasteners over time. Without adequate coating, screws can corrode, leading to:
- Structural instability
- Water leakage in roofing
- Reduced load-bearing strength
- Costly maintenance and premature replacements
That’s where Screworks™ Coated Screws make a difference.
Engineered for Weather Resistance: Screworks Coating Classes
| Applications | Coating Class (AS 3566.2:2002) | Salt Spray Test (ASTM B117) | Kesternich Cycles (DIN 50018) |
|---|---|---|---|
| Interior Linings & Non-Structural Steel Framing | C1 | 72 hours | – |
| External Cladding & Structural Framing | C2 / C3 | 240 / 1000 hours | 5 Cycles |
| Exposed Roofing (Monsoon, Coastal Zones) | C3 / C4 | 1000 / 2000 hours | 15 Cycles |
C3 / C4 coatings—used in our roofing screws—offer exceptional resistance to corrosion, even in areas with salt-laden air and heavy rainfall.
Benefits of Screworks Coated Screws
✅ Perfect for Rainy Seasons: Zinc flake and color coatings protect screws from oxidation and rust, even during extended exposure to rain.
✅ Ideal for Roofing: Our EPDM-washer equipped hex head screws maintain water-tight seals and structural integrity.
✅ Long-Term Durability: Screworks screws pass rigorous salt spray and Kesternich tests—ensuring multi-year performance.
✅ Aesthetic & Functional: Color-coated screws not only protect but also blend seamlessly with your structure.
“Our advanced coatings give your screws perfect protection in rain, ensuring your roofing and structural joints remain secure and rust-free—even in the harshest weather.”

Choose the Right Coating, Protect Your Build
Selecting the proper screw coating depends on where and how it will be used:
- C1 – Dry, internal environments
- C2 / C3 – Semi-exposed or structural framing
- C3 / C4 – Exposed roofing, coastal regions, high-humidity zones
Screworks™ offers a full range of corrosion-resistant fasteners, engineered to withstand harsh weather, chemicals, and aggressive environments. Whether you’re building prefab homes in Kochi or roofing warehouses in Chennai, we have the screws that stay strong—even when the weather doesn’t.
Conclusion
In India’s monsoon-prone and coastal areas, corrosion resistance isn’t a luxury—it’s a necessity. Trust Screworks’ advanced coatings to protect your projects from the elements. Because when the rain comes, your screws shouldn’t let you down.

📞 Looking for fasteners that last through the storm?
Contact Screworks – Stratus Steel Pvt. Ltd.
📍 Pune, Maharashtra
📧 sales@screworks.com 🌐www.screworks.com



