High-Strength HV/HR Bolts

High-strength and friction bolts are more commonly used in heavy industries, metal structure connections of towers, bridges, shipbuilding, and marine industries. This set (bolt, nut, and washer) is more sensitive to over-tightening during initial loading, therefore requiring more control in post-assembly inspection.HV bolts and nuts are distinguished by their ability to provide high and controlled preload force (pre-tensioning). They create a durable and non-reactive connection that can withstand fatigue, various loads, and environmental impacts. This makes them ideal for use in structural and critical connections – where failure is not an option.We produce high-strength bolts from size 12 mm to 30 mm and their nuts up to size 36 mm.