SFS BMSD2-S3-14 Bi-Metal Self-Drilling Screw - 1/4" x 1" Hex Washer Head (250 Pack) leaf filter making it well suited for

making it well suited for new construction

closed-cell premium EPDM rubber gaskets

A plastic washer retains the mounting screw during installation

0 can be used on trapezoidal ribbed and corrugated metal roofs as well

SFS BMSD2-S3-14 Bi-Metal Self-Drilling Screw - 1/4" x 1" Hex Washer Head (250 Pack) leaf filter making it well suited forThe SFS BMSD2 S3 14 is a heavy duty Bi Met 300 self drilling screw designed for heavy gauge metal connections, curtain wall systems, building envelope attachments, and dissimilar metal applications. Its bi metal construction combines corrosion resistant 304 stainless steel with a hardened carbon steel drill point, delivering the drilling performance needed for demanding structural connections while maintaining long term exterior durability. The SD2