This is for the M8 Flange Lock/Locked/Locking Nut. Use pictured Chart or 'Search Bar' to find other Sizes.
The Size is Approx. the Factory Copper Washer is 10.2 x 14.85 x 1.4 mm
Now Aluminum not Copper.-
This is for the M10 x 1.25 Flange Lock/Locked/Locking Nut. Use pictured Chart or 'Search Bar' to find other Sizes. 
Commonly Used on Banjo Bolts
