This is a M5 Wing Nuts. Screw length is 16mm. Accurate design. 3 file formats are attached. Details:
Nut Height (T): 4.1mm Outside Diameter (OD): 10.3mm Thread Pitch: 0.8mm Thread Size: M5 (5mm) Wing Height (L): 11mm Wing Width (W): 22.5mm
Custom size and design possible, you have to contact with me. If you want other file formats please contact with me.
Thanks, Mahbub