Qualfast: M12 Tooth Flange Hex Nut (8) Hexagon Nuts With Serrated Flange Metric Steel - Grade 8 DIN 6923 MPN: M12 Tooth Flange Hex Nut (8) Attributes: Box Quantity: 100 Driving Features: Hexagon Grade: 8 Material: Steel Surface Treatment: Plain Thread: Metric Thread Direction: Right Thread Size: M12