Manufacturer of Hydraulic Bolting Solutions Sockets for square drive torque wrench Outer hexagonal socket LFB Outer hexagonal socket F •Made of high strength Cr Mo alloy steel. •Pass standard heat treatment process, making the socket safe, reliable and durable. •Non-standard sockets can be customized. Heavy duty socket standard DIN3121/31

Manufacturer of Hydraulic Bolting Solutions The chart of max recommended torque for bolts Strength grade General structural steel Mechanical construction steel Chrome molybdenum alloy steel Ni-Cr-Mo alloy steel Ni-Cr-Mo alloy steel Torque value Torque value Torque value Torque value Attention: The data in the chart is measured under 60% yield limit of the bolt, the recommended tightening torque is 70-80% of above data. For example, for M52 grade 8.8 bolt, the tightening torque is 6362*(70-80)% = 4453-5090Nm. The loosening torque should be 1.5-2.5 times of tightening torque.