CSR 3.9 x 25 Zinc Csk S/Tap Thread S/Drill – 1000/Box

The CSR 3.9 x 25mm Zinc Countersunk Self-Tapping Self-Drilling Screws are premium-quality fasteners designed for fast, secure, and professional fixing into steel, sheet metal, and other suitable metal materials. Manufactured from high-strength hardened steel with a durable zinc-plated finish, these screws provide excellent corrosion resistance, durability, and long-lasting performance.

Featuring a countersunk (CSK) head, these screws sit flush with the surface for a clean, professional appearance. The self-drilling point eliminates the need for pre-drilling in many metal applications, while the self-tapping thread cuts its own thread during installation, ensuring a strong and secure fixing.

Supplied in a box of 1,000 screws, these fixings are ideal for construction, fabrication, metal framing, timber-to-steel fixing, HVAC installations, and general maintenance. Suitable for both professional tradespeople and DIY users.

Key Features

• Genuine CSR Self-Drilling Self-Tapping Screws
• Size: 3.9mm × 25mm
• 1,000 screws per box
• Countersunk (CSK) head for a flush, professional finish
• Self-drilling point for quick and efficient installation
• Self-tapping thread for strong, secure fixing
• Zinc-plated finish for enhanced corrosion resistance
• Hardened steel construction for superior strength
• Suitable for professional and DIY applications

Suitable For

• Sheet Metal
• Steel Sections
• Metal Framework
• Timber to Steel Fixing
• Construction Projects
• Fabrication Work
• HVAC Installations
• General Building and Maintenance

Ideal Applications

• Metal framing
• Sheet metal installation
• Timber to steel fixing
• Construction and refurbishment
• Workshop and fabrication projects
• DIY repairs

Package Includes

• 1 × Box of 1,000 CSR 3.9 × 25mm Zinc Countersunk Self-Tapping Self-Drilling Screws

Product Type

Countersunk Self-Drilling Screws

Suggested eBay Item Specifics

• Brand: CSR
• Type: Self-Drilling / Self-Tapping Screw
• Screw Size: 3.9mm × 25mm
• Head Style: Countersunk (CSK)
• Thread Type: Self-Tapping
• Point Type: Self-Drilling
• Material: Hardened Steel
• Finish: Zinc Plated
• Quantity: 1,000
• Suitable For: Steel, Sheet Metal, Timber to Steel, Construction
• Features: Self-Drilling, Self-Tapping, Corrosion Resistant, Heavy Duty
• MPN: Does Not Apply (if unavailable)
• Battery Included: No
• Voltage: Does Not Apply