Product Name: Inner Hex Bolt (DIN7991) Model NO.: DIN7991 Finish: Color-Zinc Plated Application: Machinery Grade: 10.9 Standard: DIN, GB Head Style: Counter Sunk Bolt Connection: Common Bolt Type: Round Head Material: Carbon Steel Countersuck Round Head: M8--M16 Trademark: Nande Transport Package: in 25kgs Carton, Then on Pallet Specification: M6--M24 Origin: China HS Code: 73181500 Product Description DIN7991 Inner Hex BoltMaterial: Carbon SteelGrade 5.8, 8.8, 10.9Finish:Black, Yellow Zinc, DecrometSize:M6--M24Various sizes availableOEM availableNande Industrial is a professional manufacturer for fastener and metal stamping parts, main products: bolt, nut, screw, washer and CNC turning parts.prompt delivery