Qualfast: M30X2.00 Hex Thin Slotted/Castle Nut MF (4) Hexagon Thin Slotted And Castle Nut Metric Fine Steel DIN 979 MPN: M30X2.00 Hex Thin Slotted/Castle Nut MF (4) Attributes: Box Quantity: 10 Dimensions m: 24 Dimensions n: 7 Dimensions s: 46 Driving Features: Hexagon Grade: 4 Material: Steel Number of Slots: 6 Supplied In: Pack of 10 Surface Treatment: Plain Thread: Metric Thread Direction: Right Thread Size: M30