Secure your Regal railing posts to your deck with ease using the Structural Bolt with Nut - 3/8" x 6" - Pack of 4. These bolts are specifically designed for use with MP4, MP5, and MP6 mounting plates and are hot-dipped galvanized for superior corrosion protection. Always check local building codes and ensure proper blocking when attaching your railings. Get peace of mind and security with Regal Ideas Structural Bolts.