DIN7504-K self drilling screw with EPDM washer Hangzhou Huachao Fastener Co., Ltd. Base Info Material:Carbon SteelShape of Head:HexagonSurface Finishing:Zinc PlatedCertification:ISO, GSCustomized:CustomizedTrademark:HANGCHAOOrigin:CHINA Description Pre:Gr B8 Stainless Teel Hex Bolt Next:Flat Head Self Dilling Screw (DIN7504P)