Coolant Drain plug (bolt)

[Rush2112tenere]

This is the 8mm hex bolt, mine snapped in situ as I couldn’t get much torque, when putting it back in. Struggling to find new, anybody on here know the part no?

 

[Boris]

Number 5?

 

[Rush2112tenere]

They say stress makes you stupid, I had looked at that before and essentially passed on it. It all makes sense now.
Thank you Boris.