self tapping screw with EPDM Hangzhou Huachao Fastener Co., Ltd. Base Info Model NO.:huachao 2016Material:Carbon SteelShape of Head:HexagonSurface Finishing:Zinc PlatedCertification:ISO, GSCustomized:CustomizedTrademark:HANGCHAOOrigin:CHINA Description Pre:DIN7504-P self drilling screw Next:ANSI B18.2.3m1981 Metric Hex Head Lag Screw/ Wood Screw 4.8