Question: What preload torque should be applied to an M14x2, ISO class 8.8 bolt to get a 51.75 kN preload? At this pre-load, what is

What preload torque should be applied to an M14x2, ISO class 8.8

What preload torque should be applied to an M14x2, ISO class 8.8 bolt to get a 51.75 kN preload? At this pre-load, what is the factor of safety with respect to yielding the bolt in tension? What is the stiffness of the bolt if it is 60 mm long and used in a joint where the grip length is 45 mm?

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