Bolts and Nuts for Bergische Achsen 0980623370 Bergische Achsen (BSB-525) Characteristics: 1.Materials:1045/5140/35CrMo 2. HRC: 36-39 3. Tensile stength: 1172N/mm2 4. Pack unit: 5pcs/box 5. We can make products strictly according to client's requirement(drawing and samples)