High‑tensile fasteners are intended for bolted joints that see dynamic loads, shock, and vibration, where standard 4.6 hardware is not enough. Grades 8.8, 10.9 and 12.9 provide increased tensile and yield strength, making them ideal for machinery, automotive assemblies, fabrication and structural connections. Supplied in metric sizes M6 to M48 with matching nuts and washers, these fasteners help reduce loosening, fatigue failures and unplanned downtime in critical assemblies.