i'm wanting to make a custom camera mount for my bike, and I need to know what size the bolts are that hold the gas tank lid on the gas tank, so I can buy slightly longer bolts so I can have something to bolt my camera mount to. Anybody know the bolt size?

 

Part 28 is listed as:
BOLT, SOCKET (4X21)

I believe that's pitch by length? but I'm not sure so don't quote me. Hopefully someone else can help

 

i think they're just5mm's hex bolts... just like everything else.