09 Bonneville Sissy Bar Bolts

Hello everyone,

I couldn't find anything on the matter anywhere on the forum, if it's been answered please direct me to the post!

So I bought my 09 Bonneville last week and it came with a sissy bar installed, which I don't really fancy. Trouble started when I tried to remove it, the 4 bolts that hold it (2 on each side) were rust-welded in place, and after hours of trying I had to use some destructive methods to remove them (I tried cutting a notch to bump them free, but they finally gave in and broke loose after heating them up, they are however unusable now).

So long story short, I need to replace them so I dont have empty holes on the grab rail and I found some on ebay for 6.14£ each (here FYI), however it's way more that I'd like to spend on bolts and they don't even ship to France.
I'm pretty sure I can find some cheaper bolts online but I don't have the specs for them (width, length, thread pitch, etc.). Any of you gentlemen has the info by any chance ?

Thanks a lot !
Ride safe.