Locking a thread... no , really!

[Drago]

A smear of Sikaflex on the threads, but youll need heat to ever get it off again.

 

[mickle]

Ask a Cycle Chat moderator. They do it all the time.

 

[MontyVeda]

Just buy a tube of the right grade locktite. There's low and medium strenght which comes undone and high strength which needs a blowtorch to get undone. I don't understand your point about cost. A bottle can't be much more than a fiver so if you use a couple of drops twice a year for a few years it's maybe a quid a use - and more importantly it's the right stuff.

After a hasty interweb search prior to starting this thread, Loctite Blue was around £7 and the red stuff (high strength) was over £30 for a tiny bottle!

 

[Profpointy]

After a hasty interweb search prior to starting this thread, Loctite Blue was around £7 and the red stuff (high strength) was over £30 for a tiny bottle!

there are (seemingly pukka) ebay sellers stocking every grade of loctite you'll ever need for around the £7 you mention. Seems fair enough to me. You presumably don't want the high strength anyway - it's not "better" (nor more expensive); it's for a different job such that it never ever comes undone even if you want it to.

 

[MontyVeda]

there are (seemingly pukka) ebay sellers stocking every grade of loctite you'll ever need for around the £7 you mention. Seems fair enough to me. You presumably don't want the high strength anyway - it's not "better" (nor more expensive); it's for a different job such that it never ever comes undone even if you want it to.

which is what i want (I think i said that in the OP)

 

[MontyVeda]

Update... it seems the screw has magically locked itself into the threaded cylinder all by itself... I've not tried anything other than torque as yet, but i can't get the bugger out... even gripping it in a plier clamp and using an extra long hex, it won't budge. Bit premature as I still need to grind about 1.5mm off the open end... but hey-ho

 

[slowmotion]

Update... it seems the screw has magically locked itself into the threaded cylinder all by itself... I've not tried anything other than torque as yet, but i can't get the bugger out... even gripping it in a plier clamp and using an extra long hex, it won't budge. Bit premature as I still need to grind about 1.5mm off the open end... but hey-ho

Components that magically lock tend to do the reverse just as well