Flat serrated with wings self-drilling screw

Item: countersunk head with wings and embedded  self drilling screw

Material:carbon steel (1022A)

Head:csk head with emboss

Size:diameter 6#-10#(3.5mm-4.8mm)

       Length 1/2'-5'(13mm-125mm)

Finish:black/gray phos, white/blue/yellow zinc plated

Packing:16boxes to a carton or according to customer requirement and

        Can be packed in your brand name.