motor mount bolts

At work and want to get the through bolts on the motor mounts. Anyone know the size and washer nut combo. Purchased the car without a motor and going from BB to SB. Have SB mounts just need the through bolts.

Thanks Dana

You can use "regular" bolts, but I would get the real thing. Go to Chevy or auto parts.

There is a nut and bolt place close to work. Any grade and finish also lock nuts and washers.

Think they would use a grade 5 just don't know size and if there is a lock washer.

Not going to the local hardware store.