Timco Heavy-Duty Hex Washer Screws, Zinc, 5.5x38mm, 100 Pack

The Timco Heavy-Duty Hex Washer Screws are designed for secure fastening of metal to heavy-section steel up to 12mm thick, eliminating the need for pre-drilling—saving you time and effort on your construction projects.

These screws feature a self-drilling No.5 point, making them perfect for quick and efficient installations. The hex head design ensures a secure grip when driving them in, while the fixed EPDM washer provides a weather-resistant seal, protecting against moisture and corrosion. The zinc finish adds an extra layer of durability, extending the screw’s lifespan in harsh environments.

Key Features

• Self-drilling design – No pilot hole required, reducing installation time.
• Case and core hardened carbon steel – Exceptional strength for heavy-duty applications.
• EPDM washer – Seals tightly to prevent water ingress and loosening.
• 8mm socket size – Easy to drive with standard tools.

Ideal for metal-to-metal fastening in roofing, cladding, and structural steelwork, these screws provide reliable, long-term performance.