1000 Timco 3.9x13mm yellow zinc self-tapping screws with countersunk ribbed heads for window fabrication.
The Timco 3.9x13mm Countersunk Self-Tapping Screws are versatile fasteners designed for multiple applications in window fabrication and metalwork. These high-quality screws feature a countersunk head with ribs underneath for improved countersinking action, ensuring a flush and secure fit when installed.
These screws are self-tapping with a self-drilling point, allowing you to work efficiently with steel or aluminium reinforcements without needing to pre-drill holes. Made from durable carbon steel with a yellow zinc finish, they offer excellent corrosion resistance for long-lasting performance in demanding environments.
The Phillips drive (PH) recess provides good torque transmission and helps prevent cam-out during installation. Each pack contains 1000 screws, making this an economical choice for professionals who need bulk fasteners for fabrication projects.
Ideal for:
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