The SFS BMSD3-S3-12-SQ2 is a heavy-duty Bi-Met 300 self-drilling screw engineered for heavy-gauge metal connections, curtain wall systems, building envelope attachments, and other demanding exterior applications. Its bi-metal construction combines corrosion-resistant 304 stainless steel with a hardened carbon steel drill point, delivering exceptional drilling performance while maintaining long-term corrosion resistance.

The SD5 self-drilling point eliminates pre-drilling in many heavy-gauge metal applications, helping reduce installation time while maintaining outstanding holding strength. Silver VistaCoat provides an additional barrier that helps reduce galvanic corrosion when the fastener is used with aluminum, while the fastener’s high ductility helps reduce the risk of delayed embrittlement failures. The low-profile pancake head offers a broad bearing surface and a clean installed appearance for framing and attachment applications.

Key Features

Designed for heavy-gauge metal connections
Bi-Met 300 construction combines 304 stainless steel with a hardened carbon steel drill point
SD5 self-drilling point eliminates pre-drilling in many heavy-gauge metal applications
Higher drilling capacity than conventional stainless steel fasteners
Silver VistaCoat helps reduce galvanic corrosion when used with aluminum
High ductility helps reduce delayed embrittlement failures
Low-profile pancake head provides a broad bearing surface and clean finished appearance
SQ2 square drive for positive bit engagement and reduced cam-out
Suitable for curtain wall, building envelope, and dissimilar-metal connections
Available size: #12 x 1″