Originally posted by GrandeGixxer
unfortunatly, the helicoils are too big in diameter for the 3 mm bolts. i dont know if they packed the wrong ones or if they shrink, or if they take a larger bolt. the ones i ordered i thought were supposed to taka an m3 x .50 screw but it is way loose in it. it is closer to like a 5-40 size helicoil. aargh. very frusterating. what should i do?
if you could turn a M3 screw into the coil for more than 3 to 4 turns then it should be the correct thread size. don't know why it is loose, maybe that is how it works.
anyways the coil would not work because you need a hole that is over 4mm for the coil to fit in, you wouldn't have enough room to make that hole on the case, the top flange of the sleeve is pretty close. another way is to re-tap the existing hole for a #6-32 screw (and don't forget to enlarge the hole on the button head too, 0.14" dia. would be enough). i did one for rc_alan last week and it seems to work.
316 s.s. screw is a bit too soft and i wouldn't use them on cooling head unless i have to.
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