Lock Nuts & Space Washers for Engwe E26 ebike?

[SAM K]

I have a MTB ENGWE E26 ebike. Anyone know what size the LOCK NUT is on the rear Wheel Axle? is it 10 MM or 12MM? I need to buy a new one because I lost the old one. Where can I get it? From ALIEXPRESS or AMAZON?

I am seeing these ones but no know the size. Need help.

 

[Anton]

I'm sure you've worked this out by now. But for anyone else reading this post, your best bet would be to take your bike to your local bike shop, they should have these types of nuts in stock.

 

[Annieolnie]

If you are on aliexpress get yourself a thread checker. It is the easiest way with all the different pitches, that being said, I have lost 2 of mine in the last year. Plan B is buy cheap digital calipers and measure your axle bolt and Google can do the conversion for you. General concensus is that it will be either m12 or m14. If you have a bigger motor it is more likely to be the m14. If you are truly stuck with just a ruler, the width of an m14 bolt will be 0.5512 in inches, and an m12 bolt will be 0.472 inches. Right now I have found Aliexpress to be running very late, so I would go with something quicker like Amazon.