Self drilling screws  

Product name: self drilling screw, Hexagonal head self drilling screw,galvanized self

drilling screw, countersunk head self drilling screw, wafer/frame head self drilling 

screw, slotted countersunk head, cross recessed countersunk head…..

Material: carbon steel C1022

Size:4.0/4.2/4.5/4.8/5.0*19---60mm,

Feature:pan head, drill-shaped point.

Head type: hex/ wafer/frame/countersunk head

Finished: galvanized (color blue/white)

Packing:1000pcs/box,12-20boxes/carton

Usuage: widely used in soft steel, construction, industry, daily life or other metals

 to fasten metal or other hard materials.