This remix works on 10mm M6 hex nuts.
My DYS 1306 4000KVs' prop nuts are 10mm 'across the flats' (a M6 nut per http://www.protoindustrial.com/en/support/Pages/Chart.aspx?chart=419). The original model's distance 'across the flats' is 8.2mm (for a 8mm M5 nut per the above link).
Created by scaling the X and Y dimensions (when laying flat) by 1.244x (which results in 10.2mm 'across the flats')
m6_hex_wrench.stl | 11.8KB |