Engineered for durability and strength, these structural screws are perfect for a variety of heavy-duty applications. Each screw measures 5/16 inches in diameter and 3-1/2 inches in length, offering reliable performance for your construction or DIY projects. The star washer head design ensures a secure grip and prevents stripping, making them a dependable choice for both professionals and home improvement enthusiasts alike. With a pack of 100, you’ll have plenty to complete your projects efficiently.