Timco Metal Construction Screws - Countersunk, Wing-Tip, 4.2 x 38mm, 200pk

The Timco Metal Construction Screws are specifically designed for secure fastening of wood to light section steel (maximum 3mm thickness). These self-drilling screws feature a coarse self-tapping thread with innovative wing-tip design. The wings efficiently ream out the timber, allowing the screw to achieve maximum RPM without burning out. When the wings contact the metal surface, they break off, permitting the thread to self-tap into the metal for a strong, reliable fix.

Boasting exterior plating with silver organic coating, these screws offer exceptional corrosion resistance - proven to withstand 500 hours of salt-spray testing. The hardened carbon steel construction (case and core) ensures durability and high strength performance in demanding exterior applications.

Key Features:

• Self-drilling No.3 point eliminates need for pre-drilling
• Ribbed countersunk head provides flush finishing
• Phillips drive recess for secure tool engagement
• Effective thread length of 19mm ensures positive grip
• Suitable for timber up to 18mm thick

These high-performance screws are ideal for fencing, decking, timber framing and other construction applications where wood needs to be securely fastened to light gauge steel sections.