If this is for our DVD player, for example… There is not a grounding stud or screw hole location provided directly on our DVD player. However a grounding braid can be used with the supplied “L” mounting brackets. The supplied “L” mounting brackets are not powder coated and the electronics inside are grounded external enclosure.
For our other products, simply use a wire brush on a drill chuck at the point of contact with the bonding strap. Many of our Military products are already finished with this accounted for. But most of our business aviation products are straight powder coated. The powder coating can be removed where needed for bonding purposes.