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Gentlemen, welcome back to the shop we're doing some destructive testing of some proto-wrenches over. You know, and i got these two fasteners one was torqued to yield. We could see it was yielding so we saw stopped the test. This is a perfect example of re-using bolts.

How do you know a fastener is still good. An old used, fastener is still good. Now this one has been torqued to yield and it looks exactly the same. You look at the thread form.

It's got a little of the phosphor coating off there, but phosphate rather, but no big deal. Here's how you check to see if a bolt is still good, you get a clean nut and you run it down the length of the threads. If a bolt is going to break it's going to break along its threads because that's the thinnest cross-sectional area now you can see here the nut fetches up. We look at the threads there's no burrs on there.

That means we know that that's stretched out. So this bolt, even though it looks pretty good, goes right in the bucket.

By AvvE

15 thoughts on “How to check bolts #sharts”
  1. Avataaar/Circle Created with python_avatars Douglas2 Lee says:

    The post time indicates this vid has been up for 37 minutes, and has had 14,000 views. I love UncleB, but that can't be true, can it?

  2. Avataaar/Circle Created with python_avatars Obsolete Technologies says:

    The round filing cabinet claims another… she was a good little bolt while she lasted. We can sit here and debate all day about your fancy "Torque specifications" But, the true grease primate guy walking upright k-nows, when she's tight,,,she's tight!

  3. Avataaar/Circle Created with python_avatars Rusty Broken says:

    Get out your micrometer and you should be able to detect necking.

    Also, you can put the bolt through the joint from the opposite direction and stretch it back the other way. Ha!

  4. Avataaar/Circle Created with python_avatars Steven Miller says:

    Aye what the fuck is Trudeau doing. Y'all get put in martial law because people wanted freedom?

  5. Avataaar/Circle Created with python_avatars Tyler Swallie says:

    Depends on what you are doing with said bolt…some applications don't require a top notch bolt. I say user discretion advised.

  6. Avataaar/Circle Created with python_avatars Doc Tor says:

    But that's when you get two impacts and make the nut go on to fix the threads and you got a good bolt to use again!

  7. Avataaar/Circle Created with python_avatars Juice FPV says:

    My wife asked me what a “Fuck it bucket” was and I told her it was the circular filing cabinet. She had a puzzled look on her face. Then she clicked and realised it was a bin.

  8. Avataaar/Circle Created with python_avatars thnksno says:

    All mine snap and the heads get thrown across the shop. To be swept up later along with broken drill bits and bolt chips.

  9. Avataaar/Circle Created with python_avatars Fred Flintstone says:

    Bolts never go bad unless of course they're so damage that they're not useable. For example stretched out weakened bolts are perfect for use on the brakes, engine mounts etc. of your mother-in-law, or Justin Trudeau's car.

  10. Avataaar/Circle Created with python_avatars Zach Didow says:

    I was doing some sailing of the garage variety a few summers past. I found am old handy man's book from the 50's. Truly a gem. My point being is you should make one and sell it. You have a wealth of knowledge.

  11. Avataaar/Circle Created with python_avatars Red Ensign says:

    DISLIKE : Instructions unclear, I ended up throwing a tyrannical government in the fuck it bucket instead. Also My nut is now stuck to the bolt !

  12. Avataaar/Circle Created with python_avatars Vernon PGros Morne says:

    If the bolt nazis only knew the dozens of times the bolts holding the brakes to any vehicle they've ever driven have been reused they'd shart their pants!

  13. Avataaar/Circle Created with python_avatars Reuben Sandwich says:

    In engineering this is called the "rotational capacity test" where not only you turn it to yield, but you go over in most cases a full turn and then run the bolt to check for stripping of threads or elongation.

  14. Avataaar/Circle Created with python_avatars John Kay says:

    Why do these sharts seem to show up when I'm at work? Must be the over exertion and gas station cookies.

  15. Avataaar/Circle Created with python_avatars MeriKa Tools says:

    False….you just get a deep well socket and torque it all the way…. straightening it right out.

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