Angus, No you can not bolt the hangers on unless that is how they are engineered to be installed. I would recommend you consult with a Representative from one of the fastener companies. They will be familiar with their product line and most likely the company already has a hanger for that situation. If not they will be able design one for you if you supply some additional information. What ever you end up doing make sure you follow the manufactures installation instructions when installing the hangers. The most common reason for fastener failure is improper installation techniques.