Self drilling screw:
have a drill shaped point to cut through the substrate to eliminate the need for drilling apilot hole.
materials; steel C1022
head type:Ind. Hex washer head, flat head, pan head, oval head, truss head, wafer head, pan framing head
drive: Hex, philips, Pozi, Torx
Size: M2.9-m-M6.3  #6-#14
length: 13mm-150mm
surface treatment: zinc plated, phosphated, black oxide
package: plastic bag then carton box, then pallet