Hex Head Shoulder Screw, Nylok Screw Shenzhen Shi Shi Tong Metal Products Co., Ltd. Base Info Model NO.：136Material：Carbon SteelType：Hexagon HeadGroove：HexagonConnection：Common BoltHead Style：HexagonalStandard：DIN, GB, JISGrade：8.8Origin：China Description Pre：Black Oxide DIN912 Hexagon Socket Head Bolt Screws/DIN912 Socket Cylinder Allen Hex Socket Head Cap Knurled Screw Next：Carbon Steel Hex Socket Bolt Gr10.9 Bolt /Allen Screws/DIN912 Grade 12.9 Allen Socket/DIN912 Grade 12.9 Allen Socket
