Qualfast: M5 Wing Nut A4 Wing Nut - American Type, Metric, A4 Stainless Steel, DIN 314. MPN: M5 Wing Nut A4 Attributes: Box Quantity: 100 Driving Features: Wing Grade: 316 Leading Standard: DIN 314 Material: A4 Stainless Surface Treatment: Plain Thread: Metric Thread Direction: Right Thread Size: M5