
China Manufacturer DIN979 Custome-Made Hexagon Slotted and Castle Nuts Hex Nut. DIN Standard Compliance: Manufactured strictly according to DIN standards with grades 4.8, 8.8, 10.9, and 12.9 available. High-Grade Carbon Steel: Constructed from durable carbon steel with a polished finish for machinery and building applications. Wide Size Range: Available in specifications ranging from M6 to M52 to suit various fastening requirements. OEM/ODM Customization: Supports full customization, minor customization, and flexible customization from samples or designs. Large Production Capacity: Capable of producing 1500 tons per month with over 100 sets of high-speed cold heading machines. Strict Quality Control: 100% visual and functional inspection of finished products by 3 dedicated QA/QC inspectors. Versatile Applications: Suitable for automobiles, mining, agricultural machinery, and general building construction. Established Manufacturer: Class A enterprise established in 2009 with a 12,000 sqm workshop and high-quality technical team.