Hex flange head sds with epdm washer #12-1, self drilling screw with bonded washer, hexagonal screw with EPDM washer, best quality screw Description Brand DD Fasteners Standard DIN/ GB/ ANSI/ BS FOB Price $ 0.01~$ 0.08/piece Payment Terms T/T Material 1022A Carbon Steel/ Stainless steel Surface Treatment Znic Plated / Blue white zinc /Dacromet Diameter #6 #7 #8 #10 #12 #14 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 / Yiwu/ Shanghai Port