Eye Bolt with Precision Stainless steel eye bolts have smooth external threads, the internal thread is deep, the force is uniform, the screw is not easy to slip during rotation. And the model is marked on the surface for quick identification and use. Ideal Lifting Equipmen Lifting ring bolts are easy to install and have strong lifting or hanging properties, making them an ideal lifting device. Its large load capacity allows you to achieve good lifting and hanging functions. Similar to DIN 580 DIN 580 metric bolts are a construction equipped with a screw head. It is suitable for fixing all kinds of ropes, chains and other rigging or for transporting goods and hanging goods, devices for permanent fixation.