Hexagon Socket Head Cap Bolt DIN912 Wenzhou Jianhong Machinery Co., Ltd. Base Info Material:Mild Steel,Medium Carbon Steel,Alloy Steel.Type:Hexagon HeadHead Style:HexagonalStandard:DIN912,ANSI B 18.3.Grade:4.8,8.8,10.9,12.9.Finish:Black Oxide,Zinc Plated,or According to Customer′ Description Pre:Square Weld Nut JIS B 1196 Next:Rsl Snap Rivet (4-003)