Qualfast: M42 Hex Slotted/Castle Nut (4) Hexagon Slotted And Castle Nut Metric Steel -Grade 4 DIN 935 1 MPN: M42 Hex Slotted/Castle Nut (4) Attributes: Box Quantity: 4 Dimensions P: 4.5 Dimensions m: 46 Dimensions n: 9 Dimensions s: 65 Driving Features: Hexagon Grade: 4 Material: Steel Number of Slots: 8 Supplied In: Pack of (4) Surface Treatment: Plain Thread: Metric Thread Direction: Right Thread Size: M42