.

[zzvyb6]

My outboard motors as well as my F-(35 mower uses a keyed shaft to hold the wheels for traction. Then use use a keyed washer under the nut with 8 tabs on it and you bend a few down to flats on the nut. I know it works now that a regular lock washer continually failed the test.

 

[etpm]

I do not think they used any type of special circumstances. I think they used vibrations that are experienced in certain conditions that are probably more common than we think. I don't think they tried to fool anybody. I think the video was aimed at folks who work on or spec components that are used in machinery that experiences high vibrational loads. Because the video is on YouTube people of all sorts that do not need these types of fasteners will see the video and think it is aimed at them. NordLock lock washers are probably the best lock washers. I can't think of any lock washer that performs as well. None perform better as far as I know. It is obvious why they work so well. But they are expensive. And not necessary in most applications. They are also not a substitute for safety wired fasteners and aren't meant to be as far as I know. Based on the video presented in the first post it looks like Nord-Lock is advertising to people who don't need their great lock washers. I said in a previous post that this was in large part the fault of Nord-Lock. But I need to take that statement back because I don't know what the source of the video is. If it is just a random post on YouTube by the Nord-Lock people then it is for sure their fault. But if someone pulled it of of their website and it was aimed at a particular audience then Nord-Lock is not to blame for the way their video was used and presented. At the end of the day though their lock washers perform better than any others as far as I know. Even if they are overkill for a particular situation.
Eric

 

[BravoXray]

Just dip them in really salty water before you install them.
That'll do the trick.

 

[jonsstihl]

aviation is a whole other beast. there is no shoulder to pull over on in the air. Some helicopter engines have locking inserts and tab washers. that's the nature of the beast.

i have had lug nuts come loose on two occasions one, a long time ago and I suspect My initial torque was way too low thanks to the internet and I was young. the last one this fall. I always torque the lug nuts then go for a short test drive and re torque and call it good but this year I suspect there was some rust on the winter steel wheels so when they were torqued they were good but after a couple weeks the rust must have come loose and reduced the preload on the lug nuts because most of them had come loose.

I keep the winter steelies in a shed but this summer I redid the roof and the whole thing got rained on pretty good before I could finish getting the roof back on so that was the source of the surface rust on the wheels. I suspect I won't have a problem again but there really is no replacement for checking lug nut torques regularly.

 

[ArlyA]

Well,,, if I'm not assembling my grooming implements without AP* standard fasteners, then what the %$@(!) I'm I doing!

* Airframe/Powerplant

 

[nova3930]

Nordlocks and Bellevilles are the only two lock washers worth using. There was an SAE (IIRC) paper some years ago showing that those cheap split ring deals actually make nuts come loose easier than a flat washer.

For most applications nylocs are sufficient, next step up would be a distorted thread nut moving up to castle nuts\cotter pins and safety wire.

 

[bcp]

See pages 6+ for what NASA has to say:

https://ntrs.nasa.gov/api/citations/19900009424/downloads/19900009424.pdf

Bruce

 

[Mtsoxfan]

Even though I never heard of rust lock before, I've swore too often at rusted on nuts/bolts to do it intentionally.... for any reason. )

 

[masseyrider]

a torch

 

[etpm]

Even though I never heard of rust lock before, I've swore too often at rusted on nuts/bolts to do it intentionally.... for any reason. )

That's why I posted about it. I thought it was kinda funny that we have all cussed a rusted fastener and well over a century ago someone noticed this and decided to come up with a formulation to make a rusted joint even more rusted.
Eric

 

[Deanes]

This is becoming an educational thread for me. I might need to try and find a better supplier for acetone. I can’t buy bulk, as my metal paint cabinet is full.

Places like Walmart have bottles of 100% acetone in the fingernail polish area. Not expensive.

 

[boatmoter]

This was very interesting. I’ve never seen the last type of lock washer before. It would have been nice if they would have included some of the various thread locking liquids as well.

as a retired ASE master tech I liked the Loctite brand thread locker the best, the RED if you want a non easily removable bolt or nut. you sometimes have to heat with a torch to get the loctite to soften up to remove without breaking,the blue is a medium strength that does not require heat to soften up to remove the bolt or nut, on small bolts like #6-8-10 or 1/4 & 5/16 I prefer the star washers

 

[BadgerCheese]

I bought distorted thread nuts for my Polaris UTV to replace the wheel nuts. They're high strength and grip tight.

 

[nova3930]

I’ve heard of these, but never used them. In my mind, I visualized stripped threads after a couple of on/off uses. I decided to to investigate a little more. It appears to be some very precision engineering.

Distorted thread locknut - Wikipedia

en.m.wikipedia.org

can't use them on low strength fasteners for that very reason. They act like a die and comfort the fastener thread to the nut.

 

[Mattmotors]

I remember my dad doing something like that when I was a kid. It seemed like, after torquing a nut, he would take a punch and dimple a thread on the bolt? I can’t remember the exact process for sure. After getting yelled at for not holding the flashlight correctly, it would cause me to loose interest in the project he was working on.

My brothers and I all joke about Dad and "...hold the light....It's in my eyes...". I'm sure in our minds we said hold it yourself. I also learned while holding the light that if someone is doing a job and they are doing a whole lot of swearing , They really don't know what they are doing.

 

[tonynz]

This was very interesting. I’ve never seen the last type of lock washer before. It would have been nice if they would have included some of the various thread locking liquids as well.

You cant beat Nyloc nuts here

 

[5030]

I have a lot of faith in Loctite products, but they need to be used properly.

The issue with threadlocking compounds is... The Chinese have invaded the market with counterfeit products. There is only one true threadlocker and that is Henkel Loctite.

 

[92blacksunshine]

 

[1Mech]

This is becoming an educational thread for me. I might need to try and find a better supplier for acetone. I can’t buy bulk, as my metal paint cabinet is full.

If you don't mind hanging out in the nail polish area, you can get 100% acetone nail polish remover at Walmart for about $3 for 16 ounces. A bit cheaper than at Lowes from what I saw. It is the Onyx brand. Or you can order online.

 

[newbury]

The issue with threadlocking compounds is... The Chinese have invaded the market with counterfeit products. There is only one true threadlocker and that is Henkel Loctite.

I always thought @MossRoad was a true threadlocker
Is Henkel Loctite a mod here?