This is a M16 Hex Nut. Nut length is 27mm. Accurate design. 4 file formats are attached. 3d editable iges file format attached. Details: Thread Pitch: 3.5mm Height: 13mm Width: 24mm Thread Dia: M16 (16mm)
Custom size and design possible, you have to contact with me. If you want other file formats please contact with me.
Thanks, Mahbub