Grade 88 studs, bolts or screws are developed in line with the ASTM F568 and ISO : 898 Specifications. Also called ASTM F568 Grade 8.8 Bolts, class 8.8 bolts, metric class 8.8 and class 8.8 steel; these studs are manufactured from medium carbon boron steel in quenched & tempered condition. The buyers can avail these studs in sizes, ranging from M1.6 up to M72 and minimum tensile strength of 830 Mpa. These studs undergo tests, like mechanical, impact, tension and hardness. The Grade 88 studs are applicable in oil, chemical, petrochemical and other industries.