Timco Hex Head Self-Drilling Bi-Metal Screws 5.5x100mm (100pc)
Timco hex head self-drilling screws for roofing/steel - no pre-drilling needed. Bi-metal (A2-304 stainless/carbon steel) construction.
The Timco Hex Head Self-Drilling Bi-Metal Screws are designed for efficient joining of roofing sheets to light section steel up to 5.0mm thick, eliminating the need for pre-drilling. These high-performance screws combine durability and ease of use, making them ideal for exterior applications where weather resistance is essential.
Featuring a hardened carbon steel drill tip fused to an A2-304 Austenitic Stainless Steel body, these screws offer superior corrosion resistance while maintaining excellent drilling performance. The self-drilling No.3 point ensures quick penetration through metal sheets, saving time and effort during installation.
Key Features:
- Hex head design for secure tightening with an 8mm socket
- Fixed washer (11.00mm diameter) for improved load distribution and sealing
- Effective thread length of 87mm for optimal grip
- Bi-Metal construction (A2-304 Stainless Steel/Carbon Steel) balances strength and corrosion resistance
Ideal for roofing, cladding, and other light steel construction projects, these screws provide reliable fastening in demanding environments.
Technical Specifications
- Dispatched within 0-2 business days
- Delivery to United States: 3-5 business days*
- Free Shipping Included
- Roofing sheet installation
- Light steel section joining
- Exterior construction projects
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- Thread Diameter: 5.5mm
- Length: 100mm
- Head Type: Hex
- Fixed Washer Diameter: 11.00mm
- Point Type: Self-Drilling No.3
- Socket Size: 8mm
- Material: Bi-Metal (A2-304 Stainless Steel/Carbon Steel)
- Effective Thread Length: 87mm
- Max Drilling Thickness: 5.0mm
Always follow local regulations and product guidance.
Free standard delivery on Australian mainland orders. Express delivery options and international shipping available at checkout.
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