Wedge Locking Washers for Axle Bolt

If you're breaking axel shaft bolts this is the solution! Typically the bolts are breaking after then are becoming loose.

Wedge locking washer work by requiring more torque to break them free than the torque applied tightening them. 

They're not cheap but if you've been fighting broken bolts this is as close to a guaranteed fix that you can get. 

Sold is packs of 16.