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        Wofu common fastener installation pre-tightening force and tightening torque table

        May-05,2021 1004

        Terms and acronyms:

        Fm: Installation pre-tightening force, unit KN

        Ma: The tightening torque of Fm pre-tightening bolts during installation, in Nm

        uG: the friction coefficient in the thread

        uK: Coefficient of friction in the bearing surface of the bolt head

        -Generally without special instructions, the friction coefficient is uG=uK=0.12

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