Help Identify necessary bolt

Hey y'all
I was changing my oil and noticed this bolt was missing from the secondary air pump assembly.
Anyone know what bolt I need to get, or is it fine to just use anything that fits here?

Thanks
Matt

 

dang I forgot to mark the spot. Follow the hose down from the pump to the motor, you will see the silver plate that is supposed to attach. Straight line from the oil dipstick

 

You can put whatever fits there, it's just holding the bracket down that the hose attaches to, I believe it's going to be 6 or 7mm and about 1/2 in long.

 

Likely a 6mm about 10-12mm long.

Any bolt that turns in by HAND will work, just be sure it doesn't bottom in a blind hole.

 

Thanks y'all. figured it wasn't special just making sure