Timco Heavy-Duty Hex Washer Screws, Zinc, 5.5x38mm, 100 Pack
Self-drilling zinc hex screws by Timco, ideal for metal-to-steel fastening without pre-drilling. 5.5x38mm, 100 pieces.
The Timco Heavy-Duty Hex Washer Screws are designed for secure fastening of metal to heavy-section steel up to 12mm thick, eliminating the need for pre-drilling—saving you time and effort on your construction projects.
These screws feature a self-drilling No.5 point, making them perfect for quick and efficient installations. The hex head design ensures a secure grip when driving them in, while the fixed EPDM washer provides a weather-resistant seal, protecting against moisture and corrosion. The zinc finish adds an extra layer of durability, extending the screw’s lifespan in harsh environments.
Key Features
- Self-drilling design – No pilot hole required, reducing installation time.
- Case and core hardened carbon steel – Exceptional strength for heavy-duty applications.
- EPDM washer – Seals tightly to prevent water ingress and loosening.
- 8mm socket size – Easy to drive with standard tools.
Ideal for metal-to-metal fastening in roofing, cladding, and structural steelwork, these screws provide reliable, long-term performance.
- Metal-to-heavy-section steel fastening
- Roofing applications
- Cladding installations
- Structural steelwork
- Thread Diameter: 5.5mm
- Length: 38mm
- Head Type: Hex
- Fixed Washer Diameter: 12.00mm
- Point Type: Self-Drilling No.5
- Socket Size: 8mm
- Finish: Zinc
- Material: Case & Core Hardened Carbon Steel
- Effective Thread Length: 16mm
- Max Drilling Thickness: 12.0mm
- Weight: 800g
Always follow local regulations and product guidance.
Free standard delivery on US mainland orders. Express delivery options and international shipping available at checkout.
We offer a 30-day money-back guarantee on most products. For defective items, contact us within 14 days for a replacement or refund.
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