Screw cbl z st 3,9-13 f zn3 De Dietrich 95770150

This screw CBL Z ST 3,9-13 F ZN3 is a self-tapping fastener often used in sheet metal applications within heating equipment. The cross-recessed head allows for quick installation, and the zinc plating provides corrosion resistance in humid boiler rooms. Its 3.9 mm diameter and 13 mm length make it suitable for attaching thin panels or covers. When performing boiler maintenance or replacing burner components, this screw helps achieve a secure fit without the need for pre-tapping.