Qualfast: M6X20 Hex Head Bolt + Nut BZP (GR-4.6) Metric Material - Steel Class - 8.8 Zinc Plated MPN: M6X20 Hex Head Bolt + Nut BZP (GR-4.6) Attributes: Box Quantity: 500 Driving Features: Hexagon Grade: 4.6 Head Shape: Hexagon Head Length: 20mm Material: Steel Standards Met: DIN 601/555 Surface Treatment: Zinc Plated Thread: Metric Thread Direction: Right Hand Thread Size: M6