Qualfast: M20 Hex Dome Cap Nut High Brass CU3 Hexagon Domed Cap Nut - High Type Metric Brass Cu2/Cu3 DIN 1587 MPN: M20 Hex Dome Cap Nut High Brass CU3 Attributes: Box Quantity: 10 Driving Features: Hexagon Grade: Cu3 Material: Brass Surface Treatment: Plain Thread: Metric Thread Direction: Right Thread Size: M20