Water pump bolts

Apologies if this is in the wrong section

But does anyone know what type (size and width) this bolt is?

Changing the alternator bracket on the small block dart. Top bolt came off no problems bottom one (the one circled) took much more persuading spinning around and around. Infact it got stuck 80% of the way out and needed some tapping with a hammer and chisel to get it to budge.

Now when I go to put it back in it just slides back and forth with in the hole As if it's not long enough or...

Water pump bolts
Author: admin