Qualfast: M8 Knurled Thumb Nut High A1 (50) Knurled Thumb Nut Metric A1 Stainless Steel DIN 466 MPN: M8 Knurled Thumb Nut High A1 (50) Attributes: Box Quantity: 10 Driving Features: Knurled Head Grade: 50 Leading Standard: DIN 466 Length: 18mm Material: A1 Stainless Standards Met: DIN 466 Surface Treatment: Plain System of Measurement: Metric Thread: Metric Thread Direction: Right Thread Size: M8