Product Name: DIN 7991, Socket Hexagon Csk Screw Model NO.: M10x50 Grade: 8.8 &10.9&12.9 Standard: DIN Head Style: Counter Sunk Bolt Connection: Common Bolt Groove: Socket Hexagon Type: Countersunk Head Material: High Strength Steel Transport Package: in Small Box or Bulk in Carton Specification: M10x50, raw material: Alloy steel: 10B21 Origin: China HS Code: 7318159001 Product Description DIN7991Socket Hex CSK ScrewGrade: 8.8, 10.9, 12.9Size: M3-M16Finish: Zinc/black/plain/Zinc+Cr3.Products DetailesRaw material1,Steel:C45(K1045), C46(K1046),C202, Alloy steel: SCM435,10B21Specification& gaugeM3-M16Surface FinishingZn- Plated,Ni-plated, ,Chromate,Electro Painting,Black Anodize,Plain,Chrome plated,Hot Deep Galvanize(H. D. G. ) etc.Heat TreatmentTempering,Hardening,Spheroidizing,Stress Relieving.StandardISO,GB,DIN,JIS,ANSI,BSWManufactureProcessHeading/ /Threading/ /heat threatment plating/Anti-slipping/Baking/QA/Package/ShippingSampleAvailablitywe can make sample within 7 days free of chargeif there iLead time30-40 working days as usual,It will based on the detailed order quantity.Aftersales servicewe will follow up goods for every customerand help solve problem after sales.