Timco Self-Drilling Hex Screws for Heavy Steel, Zinc, 5.5x80mm, 100pk
100 Zinc-plated self-drilling hex screws for heavy section steel up to 12mm thick. No pre-drilling required.
The Timco Self-Drilling Screws are engineered for attaching metal to heavy section steel up to 12mm thick, eliminating the need for pre-drilling and saving valuable time during installation. These high-performance screws feature a robust zinc finish for excellent corrosion resistance and durability.
Constructed from case and core hardened carbon steel, these screws offer superior strength and reliability. The hex head design ensures a secure grip with power tools, while the fixed EPDM washer provides a secure, weatherproof seal against moisture ingress.
Key Features
- Self-drilling No. 5 point eliminates need for pre-drilling
- Partially threaded design for controlled material clamping
- Corrosion-resistant zinc finish
- Includes EPDM washer for weatherproof sealing
- Case and core hardened carbon steel construction
Technical Specifications
- Thread diameter: 5.5mm
- Length: 80mm
- Head type: Hex
- Fixed washer diameter: 11.00mm
- Socket size: 8mm
- Effective thread length: 53mm (P/T)
- Maximum drilling thickness: 12.0mm
Perfect for construction, metal roofing, and structural applications requiring strong, reliable fastening solutions without the hassle of pre-drilling.
- Metal-to-heavy steel applications
- Structural steel framing
- Metal roofing installations
- Industrial construction projects
- Thread diameter: 5.5mm
- Length: 80mm
- Head type: Hex
- Fixed washer diameter: 11.00mm
- Point type: Self-Drilling No.5
- Socket size: 8mm
- Finish: Zinc
- Material: Case & Core Hardened Carbon Steel
- Effective thread length: 53mm (P/T)
- Max drilling thickness: 12.0mm
- Quantity: 100 pieces
- Weight: 1340g
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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