Ifasten #8 (4.2 mm) × 13 mm Tek Wafer-Head Self-Drilling Screws (100-Pack)

The Ifasten Tek No.8 wafer-head screw (4.2 mm × 13 mm) combines precision engineering with ease of use. Designed with a self-drilling tip, these screws penetrate light-gauge steel or metal without the need for pre-drilling, saving time and effort. The wafer head lays flush for a clean finish, and the #2 Phillips drive ensures smooth installation with reduced cam-out.

Constructed from hardened steel, these screws are plated to resist corrosion, suitable for both indoor and mild outdoor applications. Ideal for mounting HVAC components, light metal framing, decking trim, and general maintenance tasks.


General/Technical Specifications

• Length: 13 mm

• Diameter: 4.2 mm

• Head Diameter: ~8–9 mm (approximate wafer head)

• Thread Type: Fine-thread for sheet metal adherence

• Applicable Materials: Light-gauge steel, thin metals, sheet panels

• Drill Capacity: Self-drills into sheet metal (e.g., 0.8–1.2 mm thin gauge steel)

• Material: Hardened steel with zinc plating for corrosion resistance

• Standards: Common in self-drilling fasteners for metal applications