The offered HSFG Bolt is made available by us for use in the various commercial and industrial applications. These bolts are also commonly used in structures that will be exposed to a lot of vibrations, or loadings that will reverse. Since the bolts are preloaded the tension in the bolt doesnt vary as much as in a standard bolt, so they dont fatigue as quickly. The High Strength Friction Grip Bolts (HSFG) bolts are high strength structural bolts which have been tightened such as to induce tension in the bolt shank. The HSFG BOLT is very effective and safe for use in the various places.