Qualfast: M12 Hex Cap Nut Low A1 50 Hexagon Cap Nut - Low Type, Metric, A1 Stainless Steel, Grade 50, DIN 917. MPN: M12 Hex Cap Nut Low A1 50 Attributes: Box Quantity: 25 Driving Features: Hexagon Grade: 50 Leading Standard: DIN 917 Material: A1 Stainless Surface Treatment: Plain Thread: Metric Thread Direction: Right Thread Size: M12