Do it 5/16" x 3" Brass Plated Tank Bolts (2 Ct.) are close coupled bolts designed for secure fastening. These 5/16" x 3" brass-plated slotted head bolts come complete with metal washers, rubber washers, and wing nuts, providing a reliable and durable solution for your tank assembly needs. The set is conveniently carded for easy handling and storage, making it a practical choice for both professionals and DIY enthusiasts. Model Number: