I'm working on a repair of a Boeing aircraft. The repair requires solid shims that meet the definition of a structural shim (per 737-300SRM 51-30-01). The issue I'm having is the specification requires that the structural shim is fastened to the repair component or the aircraft structure. I can't not find definition on how the shim is to be fastened to those parts. Is the fasteners that are used to secure the shim to structure above and beyond the fasteners used in the repair? How many fasteners are required? What type and size? If anyone has any experience with this, I'd appreciate the insight.