Interesting engineering.

Or you know, a torque wrench!

Or you just torque it and use a paint marker.

These bolts are probably 20$ piece and can be used only once.

We use them on a pedestal base on an expensive radar. You still install them with a torque wrench, but it’s easy to tell if they come loose at a glance during the inspection.

Don't people know about this?

I just strip it and back it off a quarter turn😎

We've used torque indicator washers for many years, this seems like a similar concept, but I am more inclined to trust a torque wrench than a mass produced item where it's critical.

Torque wrench is fine but with the dye colors you can walk by it and see if its still tight. Kind of like a Mag Bolt. You can twist the indicator on a mag bolt with your finger to see if it still aligns with the marks.

How does the bolt know what torque it’s meant to be?

cool; and when it gets too dirty to tell?

Deft like the idea of this..

1 in 25 random people are colorblind and therefore can't reliably use this system that raises the price of every bolt when you could just keep a torque wrench in the truck.

kids...

A solution for a problem that doesn't exist

But can it turn back red if the bolt comes loose?

@EdMapes1 @MarkOutlaw42069 Something for ya truck

Or save money and just actually do your job??

The only thing that can fail is the bolt itself. Which seeing that it looks weak, will happen a lot

Wrench go click, bolt tight

rule of thumb, tight the bolt the best you can, only using top force no leverage, do another 1/4 turn using what leverage possible, you will be in max. 20% off the correct torque, I work with radio guides for many years it works!

Only way to not weaken the bolt head by doing this is to make the bolt head significantly thicker and larger, so cool gimmick but won't always be usable.....

To bad you can’t see it change with the impact on it

Or, you know, use the proper tool.

interesting, one definite advantage would be, with just a quick visual, one could tell if anything is loose, out of spec, would be advantageous for critical system areas ...

Huck bolts!

Wow, cool! Now we can hire less intelligent Slaves!

Why do you need a card to check to see if it’s red or black?

If your wheel falls off it’s too loose.

Or use a torque wrench

Very bad for color blind mechanics A simple torque wrench was good

We use these on the structure supporting my chemical plant. We had a spate of bolts becoming loose on the framework and walkways because of vibrations caused by a piece of the rotating equipment. Checking every bolt with a torque wrench was time consuming. These bolts are great!

That's definitely some neat science but at the same time that's a lot of effort just to avoid using a torque wrench or just developing a sense of torque

A torque wrench does this to some extent

Yeah nobody is doing this by hand if you can avoid it. Impacts are not see-through

Hmm... have you ever heard of a tool called a "torque wrench"?