[nick oliver]

Loctite do many of products for many of different things, The common ones for threads are loc 222, 243, 270 starting from low strenth, med, high. normally when using the loc270 high strenth you will have to heat it up depending on the size of the bolt.
But you find most people use way to much on a thread than they should do.. as model cars screws are very small sizes loc222 would be more than suitable. just use some common sense covering a m3 x 20 csk socket screw with loctite will be alot harder to undo than a m16 x 50 ht bolt, and maybe you should use a higher grade loctite for bigger bolts......