Self drilling screws Wafer Head 4.2x16

Phillips. Zinc-plated. Single fine thread. Piercing point. For fixing plasterboard to steel / metal partitions. 
Wafer Head for a Low Profile Finish
60° Self-Tapping Single Thread
Bright Zinc-Plated
Carbon Steel Construction
Low Friction Coating
Fully Threaded
Corrosion-Resistant
For Internal & External Use
4.2x16mm
1000pcs/box