Products Info. Commodity name: HEX BOLTS DIN 931/933 Threaded:DIN931(Partially Threaded)&DIN933(Fully Threaded) TRADEMARK:SD Standard: DIN Material: Carbon Steel Property Class:Cl.4.8/6.8/8.8/10.9/12.9 Diameter: M6-M60 Length:15-500MM Surface Treatment:Plain/Black Finish/Zinc（Cr3+) Plated /Hot Dipped Galvanized (H.D.G)/Dacromet ,etc.According to the Customer’s request. Heat Treatment:Cl.4.8 6.8 Not Need Heat Treatment Cl.8.8 10.9 12.9 Need Heat 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!