Extended hexagonal self-tapping screws with rubber washers 300pc

Self-tapping screws with extended hexagonal head and integrated rubber washers, designed for fastening into steel plate and pre-drilled surfaces without additional holes.

This pack contains 300 pieces of #12 (5.5mm diameter) screws, 1-1/4″ in length. The hexagonal head measures 0.31 inch across with 0.2 inch thickness, providing secure grip for installation.

Made from zinc-plated iron for corrosion resistance in galvanised structures and outdoor applications. The sharp, self-drilling tail eliminates the need for pre-drilling in most cases, reducing installation time. Clear, tidy threading minimises friction during installation and prevents cracking of fastening surfaces.

Smooth screw bodies without burrs and uniform head design ensure consistent force application and reduce the risk of slipping during rotation. The rubber washer component aids sealing and vibration dampening.

Each purchase includes an external hex wrench for convenient installation. Suitable for metal roofing, structural fastening, and applications requiring weatherproof assembly.

Check your application requirements before ordering to confirm screw diameter, length, and head style match your project needs.