Carriage bolts are designed with a smooth, rounded head and a square section that helps grip the material as the bolt is tightened. Originally used in horse-drawn carriage manufacturing, these bolts have become staples in woodworking, metalworking, and other applications where a strong, secure joint is required. The added square neck keeps the bolt from spinning when a nut is tightened, making installation easier and ensuring a powerful grip on the materials being joined.

Safety bolts play a critical role in ensuring the structural integrity and safety of various applications. These bolts are designed with features that enhance their resistance to loosening, vibration, and other factors that could compromise the stability of the fastened elements. Safety bolts are commonly used in critical applications where the consequences of failure could be severe, such as in heavy machinery, structural connections, and safety-critical installations. The use of safety bolts helps mitigate the risk of structural failure and ensures the safety of personnel and equipment.