5.5 X 80 -No5 Pt- WINGED CSK TIMBER to STEEL SCREW
Product Code: CDCWP5550080
Countersunk Winged Drillscrews (timber to steel screws) are a single operation screw for fastening timber to steel sections.
The wings ream a clearance hole in the timber to prevent 'jacking up' and snap off once contact is made with the steel to allow self tapping.