Qualfast: M20 Hex Nut Hot Dip Galvanised (8) Galvanised for heavy duty rust protection. MPN: M20 Hex Nut Hot Dip Galvanised (8) Attributes: Box Quantity: 50 Driving Features: Hexagon Grade: 8 Material: Steel Surface Treatment: Hot Dip Galvanised Thread: Metric Thread Direction: Right Thread Size: M20