Bi-Metal Self Screws

Our Bi-Metal Self-Drilling Screws combine the corrosion resistance of stainless steel with the drilling strength of hardened carbon steel, delivering the best of both worlds for demanding construction applications. These screws feature a 300-series stainless steel body (typically A2 or A4) for long-lasting durability and superior rust resistance in harsh environments, while the fused carbon steel drill point ensures fast, reliable penetration into steel or other tough materials—without the need for pre-drilling.

Bi-metal screws are ideal for exterior applications, coastal or industrial zones, and any project requiring both high corrosion resistance and structural performance. Engineered for precision and consistency, they help reduce installation time while maintaining strong, lasting fastening. Common head styles include hex washer, pan, or countersunk, and are available with or without EPDM washers for weather sealing. These screws are a trusted solution for metal roofing, cladding systems, curtain walls, HVAC, and other facade or framing installations.