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Anti Seize on wheel studs/lug nuts

Anti Seize on wheel studs/lug nuts

Anti Seize on wheel studs/lug nuts

I would like to address the use of Anti Seize on wheel studs. It is, through experience, an extremely bad idea. The clamping force generated is maximized by following torque specifications determined by the manufacturer. These torque values are DRY unless otherwise noted (some industrial trucks use studs which require a heavy weight oil on the threads).

I have witnessed studs rupturing when being tightend to specified torque using a torque wrench due to the use of Anti Seize.This was after tHe Anti Seize was clened by technicians per my instruction. Anti Sieze allows the lug nut to thread far beyond what it would if being tigtened dry, as intended and designed by the manufacturer. I have tested the difference on a hub and, using a torque wrench, got 3.5 turns more on a stud being tightened to specification after adding Anti Seize than when I tightened it to specification dry.

This was on an F-150 hub with 14x2.0 thread pitch and a torque sec of 150 ft lbs.

I have witnessed lugnuts ground away at the seat area by the steel wheels seat area after using anti seize. In some cases the lugs actually went through the wheel-becoming almost like a shank instead of a conical set. I also, on a 2004 Dodge Dakota, witnessed the seat mushroom out when being tightened by hand with a torque wrench because my technician missed that antiseize was on the studs. And, last but not least, I caught that the OE studs were making protrusions in the center of the OE lugnut's cap after being tightened to specification. This was on a late model Jeep Liberty. The ball joint had been replaced and the mechanic who did it put Anti Seize on that hub. The other 3 wheel's lug nuts were without damage and were dry. All were tightened in the same fashion with the same torque wrench by the same technician. Anti Seize was the only variable and, to prove it further to my technicians I removed an undamaged lug nut from one of the other 3 wheels and installed it on this hub before cleaning off the anti seize. Sure enough, you could watch the protrusion in the center of the lug nut cap appear. After cleaning the studs with Brake Cleaner, a wire wheel and a rag and replacing all lug nuts on this hub the same did not happen.

Anti Seize is used for reducing torque and most brands include that point on the label. It causes over stretched studs, some times beyond their yield point and can cuse the studs to rupture at any given time.....Scary when that time could be at highway speeds and potentially kill someone(s).

TIA has a video explaining the Dangers of Anti Seize and the design of the stud. The videos name excapes me though.

RE: Anti Seize on wheel studs/lug nuts

yes. It is well know fact that any lubricant used on a threaded connection requires a reduction in tightening torque to ensure the same clamping pressure.  

RE: Anti Seize on wheel studs/lug nuts

My SAAB specifies anti-seize for the studs.  Bottom line, if the torque spec. says use a certain lubricant you use it.  If not, then don't.

RE: Anti Seize on wheel studs/lug nuts


Reminds me of this quote:

Learn from the mistakes of others. You can't live long enough to make them all yourself.
--Eleanor Roosevelt

RE: Anti Seize on wheel studs/lug nuts

On the other hand, lubrication with an anti-sieze will prevent the studs from being broken due to frozen threads upon removal.


PS: this would have been an interesting topic for an automotive thread.

RE: Anti Seize on wheel studs/lug nuts

It was thrashed pretty well in the Automotive forum.


RE: Anti Seize on wheel studs/lug nuts

I certainly use anti-seize on the wheel studs of my boat trailer.

It is regularly immersed in salt water and maybe after 5 years the nuts undid perfectly much to the surprise of onlookers who could see the level of corrosion around the hub and wheel.

You simply take care when tightening the nut.

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