Roll-fast is the biggest manufacturer of larger diameter high tensile bolts & nuts in India. High tensile bolts are used for high-stress fastening applications. These bolts help to secure heavy objects together and shoulder their weight for many years, or even decades. These bolts & nuts are manufactured only by hot forging process, and we have the complete list of machines in our factory to manufacture these bolts & nuts. We offer High tensile bolts & nuts in 8.8, 10.9 & 12.9 grade, the choice of the grade depends upon the application and requirement of the customer. The grades 8.8, 10.9 & 12.9 have separate mechanical characteristics which are defined in the ISO 898-1.
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