Hex Head Self Drilling Roofing Screws 1)Standard: DIN, ASTM,AS,GB 2)Material: Carbon Steel,SUS 3)Diameter:3.5mm~6.3mm,6#~14 Hex Head Self  Drilling Roofing Screws  1)Standard: DIN, ASTM,AS,GB2)Material: Carbon Steel,SUS3)Diameter: 3.5mm~6.3mm, 6#~14#4)Length: 9.5~110mm, 3/8"~4-1/2"5)Thread: AB TYPE,A TYPE6)Head Type:Pan Head,Flat Head,Hex Head,Bugle Head,Wafer Head,Truss Head7)Point Type:Sharp Point,drilling Point8)Drive Type:Phillips,Pozi,Combination9)Finish: Plain, Zinc, Black Phosphated, Grey Phosphated,Nickel,Cooper,Dacroment,Ruspert 

Diameter	ST2.9-ST6.3 #4-#14
Length	6.5mm-130mm 1/4"-5"
Standard	DIN,ANSIM,ISO,IFI
Material	stainless steeel 410.304.316 and so on
Head Code	CSK,pan head,truss head,hexagon head,round head,oval head in cross recessed,combined,torx,slotted
Thread Code	full thread,half thread,or nonstandard