Window sill screw C 3,9x 200 Pieces no Cap

Product Features

✔ Precise Dimensions

• Diameter: 3.9 mm
• Length: 16 mm / 25 mm
• Quantity: 200 pieces per box
• No Cap included

The 3.9 mm diameter offers excellent holding strength while the 16/25 mm length is perfectly suited for attaching window sills and thin metal components without penetrating too deeply into the substrate.

✔ Designed for Window Sill Installation

These screws are specially developed for fastening:

• Exterior window sills
• Aluminium window sills
• Steel window sills
• Flashing profiles
• Sheet metal trims
• Metal finishing profiles

Their design helps create a clean and professional finish while ensuring long-lasting performance.

✔ Durable Construction

Manufactured from high-quality steel, these screws provide:

• Excellent mechanical strength
• Reliable fastening performance
• Long service life
• Resistance to loosening caused by vibration and temperature changes

✔ Easy Installation

The precision-engineered thread allows for quick and effortless installation, reducing installation time and improving efficiency on-site. The screws create a secure connection while maintaining a professional appearance.

✔ Professional Finish

These screws are commonly used by window installers, construction professionals, roofers, façade specialists, and maintenance contractors who require dependable fastening solutions for everyday projects.