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 Australian mainland orders. Express delivery options and international shipping available at checkout.
We offer a 30-day money-back guarantee on most products. For faulty items, contact us within 14 days for a replacement or refund.
View Full Delivery & Returns PolicySecure Transactions
We take the utmost care with your payment and personal details. Our website uses advanced encryption technology, including Secure Sockets Layer (SSL), to protect your information during transmission. You can check a secure connection by looking for 'https' and a locked padlock in your browser.
Cookie Policy
Cookies enhance your shopping experience by keeping track of your cart and remembering you when you return. We also use banner advertising based on your browsing history to present products of potential interest.
Security Warning
Beware of phishing scams! We will never ask for personal details via email. If such information is required, we'll ask you to contact us by phone. If you receive an email requesting sensitive information, do not respond and let us know immediately.
