Soo i have replaced my belts etc water pump going back together i definitely snapped the bolt to apply tension on my alternator and as its my only ride till my subaru build is finished (yeah i know hush) i need a way to get to grab my new pulley mount is there any way i can apply tension to the belt to get there roughly 200km away

Bolt is as pictured

 

just use a bolt extractor tool and replace it? its 8mm I think.