Qualfast: M20 Hex Nut BZP (4) Hexagon Nut Metric Steel - BZP (Bright Zinc Plated) DIN 555 MPN: M20 Hex Nut BZP (4) Attributes: Box Quantity: 100 Driving Features: Hexagon Grade: 4 Material: Steel Surface Treatment: Zinc Plated Thread: Metric Thread Direction: Right Thread Size: M20