ForgeFix TechFast Timber to Steel CSK/Wing Screw No.3 Tip 5.5 x 50mm Box 100 FORTFC5550L

Forgefix TechFast timber-to-steel countersunk wing screws are designed to fasten timber to steel frame structures. Breakaway wings ream a clearance hole as the screw drills, then shear off when they contact metal to protect the thread and allow the thread to engage the metal. Features a No.3 self-drilling tip for heavy-gauge steel up to 5mm, TORX drive insert for higher torque transfer, and recessed ribs for improved countersinking. Made from A4 stainless steel for corrosion resistance and suitable for internal and external use. Size: 5.5 x 50mm with 29mm effective thread and 30mm clamping thickness; supplied in a box of 100.

Designed for timber-to-steel connections for frame and roofing applications.

No.3 self-drilling tip drills through heavy-gauge steel up to 5mm.

Breakaway wings ream a clearance hole then shear off to protect the thread.

TORX drive insert improves torque transfer and reduces cam-out.

Recessed ribs deliver improved countersinking and a neat flush finish.

A4 stainless steel construction offers corrosion resistance for external use.

5.5 x 50mm size with 29mm effective thread and 30mm clamping thickness.