How should locktight be used.

[sean8997]

Also if you are using any threadlock or grease when torqueing a threaded fastener you need to reduce the torque recomended for the size of thread taking into account of the coefficent of friction!

 

[PhilDawson8270]

Also if you are using any threadlock or grease when torqueing a threaded fastener you need to reduce the torque recomended for the size of thread taking into account of the coefficent of friction!

This +1, very much this.

Given torque figures, are only given for the correct assembly, either dry or lubricated as per manufacturers spec. If the bolt is specified with a torque figure and specifies it should be thread locked, then do it the same.

Lubrication will allow the bolt to get much tighter with less torque, it is very easy to strip a thread before the required torque is set.

 

[snailracer]

...
It is worth noting that most applications that it is used, are safety critical components that are not designed for removal, if it's a nut and a bolt that isn't captive, you have better, options than a thread locking compoud, such as star washers, spring washers, nylock nuts, stover nuts, etc. Thread lock isn't usually my first choice for keeping bolts together,

Star and spring washers are not usually as effective as threadlock, IMO.

 

[sidevalve]

It's good stuff but for small screws etc I use a small dob of paint after it's tightened up. If the paint cracks the thing's undoing - easy to spot. With threadlock all SHOULD be well but if it isn't you really don't know untill it drops out.

 

[Cyclopathic]

As a general note I'd just like to say that threadlock isn't something I was thinking of using on a regular basis. In 30 years of fixing my bike and other peoples I have never until now even thought of using it. Hence the request for advice. It was suggested as a possible solution to a chainguard nut that kept working loose that screwed into a threaded bracket. I eventually sorted that particular problem with a small bolt at the back. It's just there was little clearance so not much bolt able to protrude etc.

Just in case any one was worried that I'm relying on threadlock alone to keep bikes together.

 

[Davidc]

I only use it on things that I don't often need to undo, so rack bolts, mudguard stays and light brackets mainly.

What's been said is right. Clean the components, use sparingly, and get the right grade.