The Simpson Strong-Tie F07T225TDB Self-Drilling Siding Screw is designed to deliver strength, speed, and long-lasting performance in fiber cement siding and trim applications. Made from 410 stainless steel and engineered for corrosion resistance and durability, this high-performance screw is ideal for fastening siding to metal or wood framing without the need for pre-drilling. The patented winged design clears excess material during installation, preventing damage and ensuring a flush, clean finish every time.

Whether you're working with steel studs or wood substrates, this self-drilling screw simplifies the job and helps maintain siding integrity in all climates. It’s perfect for contractors and DIYers looking for reliable performance, code compliance, and professional results.

Key Features

• 410 stainless steel provides corrosion resistance for exterior applications
• Self-drilling tip eliminates the need for pre-drilling
• Patented winged design prevents damage to siding material
• Flat head with under-head serrations for flush seating and reduced spin-out
• Ideal for use in high-moisture and coastal environments
• Available in multiple lengths to suit different siding thicknesses

Applications

• Fiber cement siding to steel or wood framing
• Cement board trim and fascia installation
• Residential and commercial exterior siding projects
• Coastal or high-humidity construction environments

Installation

• Designed for use with wood or light-gauge steel studs
• No pre-drilling required
• Use a standard drill/driver with appropriate torque settings
• Ensure proper embedment depth and avoid overdriving to protect siding integrity