Material:	Stainless Steel
Surface:	passivated
Standard & Grade/Mechanical properties:	DIN7504 K
Total Quantity:	50000  PCS

Stainless Steel Self Drilling Screw 
Material: SS 410 
Surface: passivated 
Size:ST3.5-6.3 
Diameter: 3.5-6.3mm 
Length: 13-250mm

This kinds of screws are commonly used in steel construction. the sus 410 and heat treatment make it surface hardness reach 680-750 HV. its self drilling point make it easy penetrate metal sheet.