Looking for good Screw/bolt extractors



Looking for good Screw/bolt extractors

Postby chromebumpers » January 29th, 2013, 7:18 pm

I noticed that there a few designs on the market. They never state on the package what kind of steel they are made with or grade. I'm looking for extractors that won't shear-off and bite without stripping (or is that a matter of how hard you drive the extractors into the drilled hole? Somebody on CL has a set of 35 - 1/8" to 7/8" for $75. I guess at $2 each it's not a bad deal?

I'm also looking for a good automatic center punch. The past few I bought are weak even when I pay a lot for one. Years ago I had a really great one that came from a Bridgeport Milling machine sales rep. Push down just once and it really made a deep markUnfortunatelyly everybody liked it and it was forever gone.

I don't think these tools wqualityaity can be found at Harbor Freight
Rich
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Re: Looking for good Screw/bolt extractors

Postby Indycars » January 29th, 2013, 9:44 pm

I find very few, better yet, almost none of the manufactures tell us a damn thing about what's really important to our decision to buy!!! It's all about the marketing department

Good luck , it usually comes down to someone risking their money to find out!!! I hope you can find that person.
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Re: Looking for good Screw/bolt extractors

Postby 87vette81big » January 29th, 2013, 10:37 pm

It depends upon how hard or soft the material is of the broken off bolt.
Some of the best extractors I have used are made by Snap On. Yes they are expensive.
Craftsman are OK.
Back 20 years ago, square shank extractors were still made. They have been a favorite of mine. Proto Tools made the square drive extractors. If you can find them used, they do work nice & don't shear off easy.

Starrett Tools still makes a spring loaded center punch. Check out their website.

BR
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Re: Looking for good Screw/bolt extractors

Postby grumpyvette » January 30th, 2013, 7:26 am

viewtopic.php?f=59&t=807&p=18280&hilit=+removing+rusted#p18280

viewtopic.php?f=50&t=7132&p=23959&hilit=+removing+rusted#p23959

reading these threads LINKED ABOVE might help

you can heat the intake and use penetrating solvents and still have issues.
heating the bolt and or intake causes both to expend and get tighter, and while this can help if rapidly followed with a penetrating lubricant spray that rapidly cools the bolt and penetrates along the threads its not always ideal.
but use of the new freeze release spray actually causes the bolt to contract in diam. and get much looser, youll be amazed at what a 50%/50% mix of some MARVEL MYSTERY OIL AND ACETONE left to soak for an hour and freeze spray can get loose

ID also point out that coating the threads with a good quality ANTI-SEIZE paste before they were assembled will do a long way toward preventing it from re-occuring Image
viewtopic.php?f=59&t=807&p=18280&hilit=+removing+rusted#p18280
Image
breaking off a bolt is hardly rare, but don,t go screwing up a soft aluminum intake trying to muscle it out, its more than likely locked in place due to corrosion, a damn good penetrating solvent and freezing the broken bolt after a few cycles of heat and cool tends to allow the penetrating solvent to loosen the bolt
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Re: Looking for good Screw/bolt extractors

Postby chromebumpers » January 30th, 2013, 10:10 am

Indycars wrote: . ... . . . . . . . . it usually comes down to someone risking their money to find out!!! I hope you can find that person.



Thank God for the Internet and Forums!
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Re: Looking for good Screw/bolt extractors

Postby chromebumpers » January 30th, 2013, 10:18 am

87vette81big wrote: . . . . . Back 20 years ago, square shank extractors were still made. They have been a favorite of mine. Proto Tools made the square drive extractors. If you can find them used, they do work nice & don't shear off easy.

Starrett Tools still makes a spring loaded center punch. Check out their website.



This part of the different types I see. NAPA sells square shank extractors but only in 5 sizes, They range from $3.50 to $7 each. Thanks for the info!
Rich
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Re: Looking for good Screw/bolt extractors

Postby busterrm » March 18th, 2013, 2:59 am

I agree with Grumpy on the penetrating solutions, but I have done it many different ways. Depending on how hard it is stuck when the bolt broke off, I have used a reverse drill bit to remove smaller ones. I have done it up to a 3/8 bolt, soaked it in penetrating solution and use the reverse drill bit and most times if can get the drill bit jammed a lil bit them then turn the drill motor slowly the stud will extract.
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