* BB Saha & Sons, offers Hilti Anchor Rods and elements in 4.8, 5.8, and 8.8 grades. The first digit of the grade refers to the material’s ultimate tensile strength, and the second digit is the ratio of yield stress to ultimate stress. For example, 5.8 grade steel has an ultimate tensile strength of 500 N/mm2 and a yield stress of 400 N/mm2 (500 x 0.8 = 400 N/mm2).
* All Hilti threaded anchor rods are as per ISO 898 standard. Hilti has 4.8, 5.8 and 8.8 grade threaded anchor rods in the Indian Portfolio.