Timco Heavy-Duty Self-Drilling Hex Screws, 5.5x65mm, Zinc, 100pcs
Heavy-duty self-drilling screws for metal (12mm max). Zinc-plated carbon steel, hex head, 100pcs.
The Timco Heavy-Duty Self-Drilling Hex Screws are engineered for robust metal-to-metal applications, eliminating the need for pre-drilling in heavy-section steel up to 12mm thick. These screws feature a No.5 self-drilling point for effortless penetration, reducing installation time and labour.
Constructed from case & core hardened carbon steel with a zinc finish, they offer exceptional durability and corrosion resistance, making them ideal for demanding environments. The hex head design (8mm socket size) ensures a secure grip, while the 12mm fixed washer provides even load distribution to prevent material damage.
Key Benefits
- Self-drilling capability – Saves time by removing the need for pilot holes.
- High-strength material – Hardened carbon steel core resists shear and tensile stress.
- Zinc-plated finish – Guards against rust and extends service life.
- Secure fastening – Hex head with integrated washer for stability under load.
Technical Specifications
- Thread Diameter: 5.5 mm
- Length: 65 mm
- Effective Thread Length: 46 mm
- Max Drilling Thickness: 12.0 mm
- Attaching metal to heavy-section steel (≤12mm)
- Structural steelwork
- Industrial fabrication
- Metal roofing/cladding
- Thread Diameter: 5.5 mm
- Length: 65 mm
- Head Type: Hex
- Fixed Washer Diameter: 12.00 mm
- Point Type: Self-Drilling No.5
- Socket Size: 8 mm
- Finish: Zinc
- Material: Case & Core Hardened Carbon Steel
- Effective Thread Length: 46 mm
- Max Drilling Thickness: 12.0 mm
- Weight: 1060 g
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.
