100mm Socket Screws, Custom Long Screws Factory Shenzhen Shi Shi Tong Metal Products Co., Ltd. Base Info Material:Stainless SteelType:Cap HeadGroove:HexagonConnection:Common BoltHead Style:Cap HeadStandard:DIN, GB, JISGrade:4.8 Description Pre:Hex Bolts DIN933 Next:High Quality Carbon Steel Carriage Bolt