1999 cobra removed lower intake manifold to crossovertube

I have a 99 cobra convertible and needed to remove my intake manifold uppper and lower
. This bolt you see is one of 2 bolts that bolts coolant crossover pipe to lower intake manifold.. does anyone know where I can buy it and what the name is? Also can I just substitute a M6x 1.0 bolt? Any help would be tremendously appreciated..
 

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