Zinc Plated Hex head self drilling screw with No.5 drilling point

 
Self drilling screw

Material: 1022A
Specification: ST3.5-ST8.0

Surface treatment: yellow zinc plated/zinc plated/Ruspert coating/class 3

Standards: DIN7504K  DIN7504P DIN7504N  GB15856.1   GB15856.2 GB15856.4