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Old 12-08-2012, 11:46 AM   #1
Hootowl OP
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Socket Head Cap Screw Problem

I've got a buggered cap screw (Allen) head bolt in a cramped location with very little room to maneuver tools around the head of the bolt.
The socket head isn't very deep. An easy out doesn't grab enough bolt material to do its job.
There isn't room around the outside of the bolt to use a tool that grabs the outside of the bolt

The only idea I have right now is welding a nut to the head of the bolt but that's going to be problematic as well due to the space constraints.

Any high tech tools out there in the market place that might work?

Ever use these? http://www.grahamtool.com/boltandscrewextractor.aspx

Richard
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Old 12-08-2012, 12:01 PM   #2
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Sometimes I use a cutting wheel on a dremel tool to make a slotted head, then remove the screw with a flathead screwdriver.
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Old 12-08-2012, 12:07 PM   #3
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If you can get to the side of the head with a sharp center punch sometimes you can strike the center punch sharply and loosen it.
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Old 12-08-2012, 12:12 PM   #4
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Originally Posted by Midnightventure View Post
If you can get to the side of the head with a sharp center punch sometimes you can strike the center punch sharply and loosen it.
Thanks for the ideas so far.
I forgot to mention that the bolt is in way too tight hence the buggered head.
I hate fixing other people's FU's!
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Old 12-08-2012, 12:17 PM   #5
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If you can swing it, welding a nut on is a common technique, the sharp spike of heat also helps break loose any corrosion/locktite etc that may make removal more difficult. I've never yet had any of the magic tools work for me otoh using a left-hand drill to core out the screw shank often loosens it to the point where the torque imposed by the drill unscrews it. Of course getting a left hand drill into play and not wandering out the side of the bolt and not going too deep is the fun part...
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Old 12-08-2012, 01:30 PM   #6
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Get a Torx bit a little larger than the hex. Pound it into the cap screw. Hopefully the hammering will help break it free, and the fluted on the Torx have enough meat not to strip out further. Might ruin the torx

Heat it if possible the cool it quickly. Thermal shock.

Good luck.
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Old 12-08-2012, 01:36 PM   #7
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Three suggestions:

Cut a pc of shim stock to wrap arond the allen wrench and drive it into the socket. This may give enough grip to get it out.

Try a hand held hammer type impact. Again drive a over size allen ( inch size or Torx ) into the socket. The blows from the impact do wonders to loosen up stuck bolts.

From now on, try anti sieze to prevent reoccurance.

Wrap shim stock like this:


Drive it in there: ( is that what she said? )
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Old 12-08-2012, 02:04 PM   #8
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Welding an allen hex bit into the cap screw is another (similar) option. The graham tool bolt extractor may work. Then, when it doesn't, weld it into the head of the cap screw. Good luck!
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Old 12-08-2012, 02:24 PM   #9
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Vice grip?
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Old 12-08-2012, 02:32 PM   #10
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Occasionally a Torx bit driven into a bad allen will remove it.
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Old 12-08-2012, 04:00 PM   #11
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Vice grip?
Not enough room
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Old 12-08-2012, 04:01 PM   #12
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Occasionally a Torx bit driven into a bad allen will remove it.
Thought of that already but not enough room to wack it with a hammer
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Old 12-08-2012, 04:29 PM   #13
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drill it out with a bit slightly larger than the diameter of the shaft. the head will spin off, removing the pressure from the shoulder of the head. then remove part, and remove remnants of screw. or use a left handed bit. either way if it's seized from overtightening, once you remove the head, it will be simple.
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Old 12-08-2012, 06:19 PM   #14
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Can you post a good sharp pic of it?
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Old 12-08-2012, 06:56 PM   #15
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Well I'll be damned. A John Bircher sighting.
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