Timco Countersunk Self-Tapping Screws 3.9 x 25mm, 1000 Pack

The Timco Countersunk Self-Tapping Screws are designed for multiple applications in window fabrication, particularly where steel or aluminium reinforcement is present. These screws are ideal for use in corrosive environments, thanks to their martensitic stainless steel (410) construction and silver organic finish, which enhances their durability and resistance to rust.

Featuring a self-drilling point and self-tapping thread, these screws ensure quick and hassle-free installation, reducing the need for pre-drilling. The Phillips (PH) recess and countersunk head provide a flush finish, making them perfect for applications where a smooth surface is required.

Key Features:

* Thread Diameter: 3.9mm
* Length: 25mm
* Head Type: Countersunk
* Recess Type: Phillips (PH)
* Thread Type: Self-Tapping
* Point Type: Self-Drilling
* Finish: Silver Organic
* Material: Martensitic Stainless Steel (410)

These screws are supplied in a bulk pack of 1000 pieces, making them a cost-effective choice for both professional tradespeople and DIY enthusiasts. Suitable for a range of window fabrication projects, they ensure a secure and long-lasting hold.