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Old 29 July 2015, 12:30 PM
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Rob669
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Default Thread Inserts - unscrewing

Has anyone else had this problem and found a solution, not being able to torque up a thread insert (helicoil.vcoil etc) past about 20 Nm? The insert just winds up the bolt threads.
Old 30 July 2015, 05:38 PM
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mikeblackett
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when you screw in the helicoil use a little loctite ( high strength)let it set,then this prevent the helicoil from screwing back up the bolt when you tighten up bolt
Old 30 July 2015, 07:11 PM
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MOTORS S GT
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That usually happens when you have incorrect thread pitch helicoil & tap, & the helicoil binds to the bolt thread & unwinds.
Old 31 July 2015, 06:12 PM
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Rob669
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Thanks. Thread pitch was correct. I'll try some Loctite.

Cheers
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