[RFazio]

What is used to mark the threads of bolts that are finish tightened. I see it over the end of the bolt and on the nut, just a dot. My father used to use nail polish but I'm sure there is something better. Is it just used to mark the threads or is it actually thread locker also? I see that loctite has red threadlocker that can be used after the bolt is tightened. Is this what is generally used?

 

[Jamie]

Torque Seal

 

[lrfrey]

As Jamie pointed out it's called torque seal, it is used only as an indicator of nut movement, it is not thread locker. I use it after I complete torqueing the nut, I then know I have torqued it by a quick look. Self locking nuts do not need thread locker. Fingernail polish works as well, they are both lacquer as far as I know.

Larry

 

[RFazio]

Thanks

Thanks for the quick responce guys. That's exactly what I was looking for.