M12 / 12MM Metric Wing Nuts - Steel Zinc Plated - Butterfly Nut BZP DIN 319 AF
Zinc Plated BZP. These are a DIN 315 AF. Further details are as follows Wing Nut Overall Height - 22.3mm. Wing Nut Overall Width including Wings - 49.4mm. Pitch - 1.75mm. Aluminium Sprocket Nuts. Aluminium Round Bar.