DIN7981 Flat Head Self Tapping Screw (Stainless steel screw) Hangzhou Huachao Fastener Co., Ltd. Base Info Material:Stainless SteelShape of Head:FlatCertification:ISOCustomized:CustomizedTrademark:HANGCHAOOrigin:ChinaHS Code:73181400 Description Pre:Hexagon Bolt (DIN933) Stainless Steel 304/316 Next:DIN7504-K self drilling screw with EPDM washer