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Stripped threads on stem

Old 06-17-07, 04:47 PM
Old School
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Stripped threads on stem

One of the threaded holes in my aluminum stem has stripped out.
Can anyone suggest a reliable repair other than replacing the stem?
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Old 06-17-07, 04:50 PM
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Helicoil or retap the hole for a larger screw.
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Old 06-17-07, 08:40 PM
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Retapping is your best bet as helicoils require a hole about
2mm larger + thread depth to accomodate the coil.
So a close exam and measure is needed to see if there is
enough metal to allow this. If the hole is blind then tapping
to the bottom requires special blunted taps, or progressively
grinding off of the end of the tap as it progresses into the hole
so the tap can get to the bottom. If that is the case then
HSS tap is preferred over cheaper carbon steel as grinding
carbon will ruin it.
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Old 06-18-07, 06:26 AM
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If the hole isn't "blind", you could drill it to a clearance diameter for the standard bolt and use a longer bolt and nut.
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