Nail stoppers help prevent nails from piercing pipes and electrical lines. Install over utilities that pass through framing members. PSPNZ protecting shield plate nail stoppers meet IRC, IBC and the International Plumbing Code. PSPN516Z meets the code plumbing protection requirements as well as having additional fasteners if the designer chooses to use it as a track splice strap. PSPNZ 5 in. x 16-5/16 in. ZMAX® Galvanized Protecting Shield Plate Nail Stopper (Pack of 480).