Products Info. Commodity Name: HEX BOLTS DIN 6914 TRADEMARK:SD Main Standard: DIN Material: Carbon Steel Property Class:Cl.HV-12.9 Diameter: M12-M36 Length:40-500MM Surface Treatment:Plain/Black Finish/Zinc（Cr3+) Plated /Hot Dipped Galvanized (H.D.G)/Dacromet ,etc.According to your request. Heat Treatment:CL.4.8 6.8 Not Need Heat Treatment&Cl.8.8 10.9 12.9 Need Hot Treatment Head Type:Hexagonal Payment term:T/T, L/C Business type:Manufacturer, trading Export Markets : USA, Canada, Brazil, U. K., France, Germany, Spain, Italy, Switzerland, Dubai, Singapore, Malaysia, Japan, Korea. Etc. Advantages： -Competitive Price! -Well and High Quality Control! -Satisfactory Service! -OEM service available! -Customer’s Design and Logo are Welcome! If you have any questions,please contact to me.THANK YOU!