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Tool Talk Discussion Forum

Anti-Sieze or Threadlock - Which to Use?

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KEG

11-14-2003 19:01:53




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I'm confused. As I work on my tractor (and other equipment) I am often puzzled whether I should put anti-sieze on the threads to make it easier to get off in the future, or threadlock to be sure it won't come loose.

How do you guys decide which to use.

KEG




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Bill

11-16-2003 08:39:10




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 Re: Anti-Sieze or Threadlock - Which to Use? in reply to KEG, 11-14-2003 19:01:53  
Never sieze is great stuff for anywhere but lug nuts. In some states it's even on the books as being a no no for a licenced garage to do that.... Tends to let the lugs come loose.... Guess that would be cause there is no lock washer in that application



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Skinner

11-17-2003 02:53:06




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 Re: Re: Anti-Sieze or Threadlock - Which to Use? in reply to Bill, 11-16-2003 08:39:10  
In my opinion, neverseize on lug bolts was eliminated for the main reason of shops over torquing lug nuts causing either the rims to split or the studs to snap off during side loading. I don't remember off hand, but the torque multiplies a lot when using neverseize, and when a mechanic gets after it with a air impact it can be catostrophic.

I have a scar on my lower lip where I tried to remove a lug nut and the stud broke causing the jack handled to go though my lower lip. I went back to the trie store with blood running down my face and was looking for the guy. The stud already had fractures around the stress risers and didn't take much to cause it to part. Yes, I was turning it the right direction - Grin.

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Matt Clark

11-18-2003 07:22:03




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 Re: Re: Re: Anti-Sieze or Threadlock - Which to Us in reply to Skinner, 11-17-2003 02:53:06  
Skinner's right...neversieze is not for use on lug nuts (or bolts) because it allows for overtorquing...which leads to lug failure or rim cracking.

In our business, we always stress proper application of lug nuts/bolts and that necessitates the use of a torque wrench or (at least) torque sticks...especially when using air wrenches for installation.



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wdTom

11-16-2003 17:54:35




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 Re: Re: Anti-Sieze or Threadlock - Which to Use? in reply to Bill, 11-16-2003 08:39:10  
I can't stand the garting sound of dry lug bolts. I luse grease on them. And I have never had one come loose in the 40 years I have been dealing with lug bolts/nuts. The other thing is I tend to keep vehicles for a long time and I don't want the dry threads to wear from use. They can get dry/rusty quick if not greased and if you don't pull a wheel for a year or longer sometimes they don't get stuck if greased.

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Bus Driver

11-15-2003 13:22:18




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 Re: Anti-Sieze or Threadlock - Which to Use? in reply to KEG, 11-14-2003 19:01:53  
The loctite usually seals out water so that rusting of the threads does not occur. So the choice is about the possibility of the bolt working loose. RG LeTourneau used to say that a fastener that does not move does not work loose. He developed his own thread system for his machinery.



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jim

11-15-2003 08:06:49




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 Re: Anti-Sieze or Threadlock - Which to Use? in reply to KEG, 11-14-2003 19:01:53  
threadlock is just as it say's, it locks the threads. you do not want to use a threadlocker unless you really have to,such as excessive vibration. If you have the fear of a bolt coming out under normal conditions, replace the bolt, if you check a bolt real close, you will find wear in the threads and these usually will be the bolt that keeps coming loose. My employees get upset when I tell them to use new bolts in a critical application that has some age on them, but I have proved over and over that a bolt will wear in the threads, then not stay tight. Bolts are a dime a dozen, and it is a lot easier to do it right the first.

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George

11-15-2003 02:30:09




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 Re: Anti-Sieze or Threadlock - Which to Use? in reply to KEG, 11-14-2003 19:01:53  
For bolts going into waterjackets (head and water pump bolts for example) I seal the threads against leakage, and rust, with Permatex #3 Gasket Sealer.



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Wayne

11-14-2003 21:43:21




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 Re: Anti-Sieze or Threadlock - Which to Use? in reply to KEG, 11-14-2003 19:01:53  
Most bolts if installed and tightened properly...either with a torque wrench (the only really "proper" way) or over time just getting a feel and knowing it's right, aren't prone to back out on their own and don't need any type of locktite. Most bolts though, except for a special few exceptions, can stand a little antisieze. If nothing else it reduces the friction between the threads and allows the bolt to get tighter with less applied force/torque than it would if it were dry. As a mechanic I don't ever use thread lock unless the bolt is in a location that is prone to vibration or some other factor, such as something using it as a pivot point, that makes the chance of it backing out highly probable. I also use it on things like the bolts in a crankcase that hold up the oil pump, etc. I do this because I don't like to use lockwashers in a place like this because they are prone to break over time and fall out leaving the bolt loose, and simply because you can't see the bolts once the engine is together to know if the problem I just stated has occured. Then there's the old reliable reason of the manufacturer says to use it on this or that specific bolt. For antisieze, I try to use it everwhere I can. Things like exhaust manifold bolts/nuts, sheetmetal bolts, air cleaner clamp bolts, etc. Basically anything that may have to come back loose either to service something or is a access to service something, or as one post said is simply gonna be subject to rust getting to it and locking the bolt. There is no better locktite that mother natures own....
Just my .02 and happy wrenching.....

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old

11-14-2003 19:46:08




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 Re: Anti-Sieze or Threadlock - Which to Use? in reply to KEG, 11-14-2003 19:01:53  
This may sound strange but I use silicone gasket sealer on bolts that I have problems with, they don't come out on there own and when its time to take them back out they come out easy.
Also if they are in a place that is going to stop a water leak as in some engines I have found they help that problem also. Just my 2 cents worth but hope this helps someone



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wdTom

11-14-2003 19:08:49




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 Re: Anti-Sieze or Threadlock - Which to Use? in reply to KEG, 11-14-2003 19:01:53  
I don't use loctite unless the fastner has come loose on me or it is REAL important. I put grease on most threads as I assemble them. If it is in a real bad place for rust I will anti sieze.



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