SFS BMSD3-S3-12 Bi-Metal Self-Drilling Screw - #12 x 1-1/4" Hex Washer Head (250 Pack) clamp on handle and metal wall panel applications

and metal wall panel applications

accurate transition in the downspout run

Gutter Scoop

1 mm (#7) drill bit

Compatible with most Malco TurboShear systems

SFS BMSD3-S3-12 Bi-Metal Self-Drilling Screw - #12 x 1-1/4" Hex Washer Head (250 Pack) clamp on handle and metal wall panel applicationsThe SFS BMSD3 S3 12 is a premium Bi Met 300 self drilling screw designed for light and medium gauge metal connections, curtain wall systems, building envelope attachments, and standard facade subframe installations. Its bi metal construction combines corrosion resistant 304 stainless steel with a hardened carbon steel drill point, delivering increased drilling capacity while maintaining the long term corrosion resistance required for exterior