![Amazon.com : Bike Hex Crank Arm Bolts Spindle 8mm Allen Key Bolt Screws Capless Bottom Bracket for Cycling Bicycle Axle (2 Pcs) : Sports & Outdoors Amazon.com : Bike Hex Crank Arm Bolts Spindle 8mm Allen Key Bolt Screws Capless Bottom Bracket for Cycling Bicycle Axle (2 Pcs) : Sports & Outdoors](https://images-na.ssl-images-amazon.com/images/I/710Uv4-vmOL._AC_UL600_SR600,600_.jpg)
Amazon.com : Bike Hex Crank Arm Bolts Spindle 8mm Allen Key Bolt Screws Capless Bottom Bracket for Cycling Bicycle Axle (2 Pcs) : Sports & Outdoors
![Bicycle Pedal Fixed Screws, Asudaro 10 Pieces Bicycle Pedal Screw M4 Bicycle Pedal Bolts Carbon Steel Suitable For Pedals Of Road Bikes Mountain Bikes Bicycle Pedal Fixed Screws, Asudaro 10 Pieces Bicycle Pedal Screw M4 Bicycle Pedal Bolts Carbon Steel Suitable For Pedals Of Road Bikes Mountain Bikes](https://m.media-amazon.com/images/I/51ocVVAaXfL._AC_UF894,1000_QL80_.jpg)
Bicycle Pedal Fixed Screws, Asudaro 10 Pieces Bicycle Pedal Screw M4 Bicycle Pedal Bolts Carbon Steel Suitable For Pedals Of Road Bikes Mountain Bikes
![What's the size of this bolt? 10.9mm? And also this bolt gets loosen for every 100-200km of ride. So placeing a lock washer will help to prevent it from loosening? : r/bikewrench What's the size of this bolt? 10.9mm? And also this bolt gets loosen for every 100-200km of ride. So placeing a lock washer will help to prevent it from loosening? : r/bikewrench](https://i.redd.it/v8i0qol2old61.jpg)