Technical Specification We manufacture high tensile fasteners in all grades as per customer's drawings/sample and specifications. Non Standard Nuts & Bolts used in Cement Plants, Fertilizer Plants, Automobile Industries etc. Range : 8m to 72m Surface Finish : Black, Zinc Plated, Hot Dipped Galvanized, Zeflon Coating Grade: 4.6, 6.6, 8.8,10.9,12.9 Standard: As per all International Standards