Engine front brackets snub mount hex nuts

[Joshauty]

One of my hex bolts on the front engine bracket has rounded so need new bolt before trying to get it out, anyone know what bolt it is and where to get it from and then the struggle of getting it out 

cheers

[Magnet]

Hello Josh. 
Can you remove its partner - if believed it’s the same? 
You can then measure it up. and I’d try eBay sellers for a similar high tension replacement. 
Kind regards,

Gareth.