Water Proof screw, Hex Head Self Drilling Screw with grey washer,hex flange head self drilling screw with bonded washer Description Name Water Proof Hex Head Self Drilling Screw Brand DD Fasteners Standard DIN/ GB/ ANSI/ BS FOB Price $ 0.01~$ 0.08/piece Payment Terms T/T Material Steel/Carbon Steel Finish Znic Plated / Blue white zinc Lenth 13mm~350mm Supply ability Supply ability 5000tons/ per month OEM Service Yes Min.Order Quantity 1Ton/ Tons Ppackaging& Delivery Packaging Details Bags/ Boxes / pallet Port Tianjin /Qingdao