I have a 110mm screw for the roof rack that has completely rusted together with the round thing attached to the screw, what is it called? It is threaded internally and is supposed to move when you screw, but it is stuck solid.

/Peter
 
  • Rusty 110mm screw attached to a round threaded part on a roof rack, placed on a white paper background.

Best answer

Probably just called a round thing, but resembles a sargsprint.
Has at least an 8-digit article number with the manufacturer.

What is the diameter of the thing and the screw.
The thing is simple to manufacture, but a 110 mm long screw with threads all the way might be harder to find.

Protte

PS How much have you applied and pulled, put the thing in a vise? WD 40 and rocking back and forth can help. DS
 
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Smackbonk
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The round thing can be bought in different sizes here: Cross Dowels - www.missingscrew.co.uk For the long screw, I would take a piece of threaded rod and replace the head with two nuts tightened against each other.
 
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Smackbonk
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Whatever it's called, that can be fixed with oil, it's not that serious.
Most important: Don't Rush!
Don't. Rush.
Apply oil to the thread that is stuck, regular motor oil works, or sewing machine oil. ATF, automatic transmission fluid (or carburetor oil, those who remember) also works well.
Wait, let it seep in. If you have a heat gun, you can warm it a bit. Sometimes it might take a couple of days, up to a week.
Gradually, you can test it a bit, and when it starts to loosen, work in more oil and move back and forth. Once it runs the entire thread length, wipe it clean and lubricate with what's supposed to be used, I would recommend some common uncomplicated grease.
Then, disassemble, clean, and lubricate again once a year before it starts sticking again.
 
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Smackbonk
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Thanks for the tip! It's already in oil but I need it by tomorrow... careless to let it go this far! I'll try to speed up the process!
 
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Fotografen
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Meh...sometimes you miss things...in some way I've acquired this art...:oops:
 
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Smackbonk
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T
If you have a vice, secure it there and then just put your all into it with a ratchet for kung och fosterland.
 
T TechChad said:
If you have a vise, secure it there and then just go all out with a ratchet.
I've considered that, felt it in the vise but guessing the screw will bend before this comes loose...
 
T TechChad said:
Do you have a vise, then secure it there and then just go for it with all your might using a ratchet handle.
I hope you weren't serious with that? Just the way to ruin the joxet completely...
 
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Appendix
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T
Smackbonk Smackbonk said:
I have considered it, felt it in the vise but guess the screw will bend before this comes off....
Nah, it feels like that's where the line is drawn.

Fotografen Fotografen said:
I hope you weren't serious about that? That's exactly how you end up ruining the stuff completely...
If it's just stuck so tight that you can't unscrew it by hand, it feels like a good solution. No, of course, I don't mean you should apply so much force that it breaks, but to try it gently if it might help. It's easier when you have it securely held in something.
 
For your information, the Swedish name sargsprint is just as indicated above! I will try to loosen the things but otherwise, Biltema has similar ones that will work!
 
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