This UNC Titan carriage bolt is a high-quality fastener suitable for various applications. It features a 5/16-18x1/2 screw size and a round head style, making it a perfect fit for inch-based systems. The bolt is made of durable steel material and has a zinc finish for added corrosion resistance. In this package, you get 100 pieces of Grade 2 bolts, ideal for use in business and industrial settings. The model number is CARRIAGE BOLT, and it is compatible with a range of systems. Whether you are looking for a fastener for your construction project or a replacement part for your machinery, this UNC Titan carriage bolt is a reliable choice.