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Old 10-23-2012, 10:04 PM   #1
Playa
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Default How do you get a stripped allen head bolt loose

Have an Allen head bold that the head is stripped, wrench keeps slipping.

I've used liquid wrench trying to break it. All I've managed to do is waller the head out more.
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Old 10-23-2012, 10:05 PM   #2
ecallarman
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get the nearest size bigger metric allen wrench and tap in. May provide enough grip to break loose.
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Old 10-23-2012, 10:08 PM   #3
BrianL
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google screw extractor
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Old 10-23-2012, 10:12 PM   #4
Austin
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I have had some luck getting using torx bits to grip when a Allen screw starts rounding
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Old 10-23-2012, 10:13 PM   #5
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If you have a torx, find one that you can lightly tap in for a snug fit and try that. Depending on what the screw is on, a punch and hammer may help loosen it. I use an air hammer a lot with a small punch point to get buggered screws out of car parts, etc
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Old 10-23-2012, 10:14 PM   #6
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If it has a shoulder you can grind two sides flat and use pliers or crescent wrench to get it. Bolt extractors work too but in my limited use they are a pain.
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Old 10-23-2012, 10:15 PM   #7
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easy out
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Old 10-23-2012, 10:15 PM   #8
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Quote:
Originally Posted by Austin View Post
I have had some luck getting using torx bits to grip when a Allen screw starts rounding
This too!
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Old 10-23-2012, 10:17 PM   #9
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Quote:
Originally Posted by Playa View Post
Have an Allen head bold that the head is stripped, wrench keeps slipping.

I've used liquid wrench trying to break it. All I've managed to do is waller the head out more.

Now that is a "Texas" word. "I'm a fixin to waller the head out more"
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Old 10-23-2012, 10:20 PM   #10
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Quote:
Originally Posted by scissorhands View Post
easy out
And we have a winner!
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Old 10-23-2012, 10:21 PM   #11
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Use a flat head screw driver. Tap it in.
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Old 10-23-2012, 11:24 PM   #12
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Cut a slot in it with a Dremel tool and use a slot head screw driver.
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Old 10-23-2012, 11:32 PM   #13
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Quote:
Originally Posted by Draco View Post
Cut a slot in it with a Dremel tool and use a slot head screw driver.
That's what I usually do.




Ike
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Old 10-24-2012, 12:03 AM   #14
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Small chisel and hammer, works the fastest for me.
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Old 10-24-2012, 12:06 AM   #15
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Take a drill bit that fits inside the head you have stripped out and slowly drill the head until it pops off the bolt shank. Once the head is off you can back out with your hand or vice grips. This is usually the route I go.
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Old 10-24-2012, 12:09 AM   #16
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How large is the head? I have good luck using a hammer / flat punch that is about the size of the allen head and hit it square on the bolt head a few good whacks. This should form the "hex" back to where its possible to get the original allen size to fit correctly and it'll come loose. Kinda hard to explain but this works 90% of the time at my job as we only use allen head bolts.


Is this on your bow?

Last edited by Codypatt1; 10-24-2012 at 12:11 AM..
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Old 10-24-2012, 12:09 AM   #17
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An easy out is what I've always used.
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Old 10-24-2012, 05:51 AM   #18
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Depending what the bolt is in. Im guessing an aluminium riser. You can apply heat (cutting torch)to the bolt which will expand in the hole will loose the corrosion in the thread and then will allow you to remove it easier. Be careful not to overheat it. And don't apply the heat directly to the riser. If in doubt have a bowshop take a look at it.
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Old 10-24-2012, 06:18 AM   #19
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Can you grab the bolt head with needle nose vise grips? If so yhen try that,that is what I do most of the time
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Old 10-24-2012, 06:19 AM   #20
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Easy out
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Old 10-24-2012, 06:41 AM   #21
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Quote:
Originally Posted by scissorhands View Post
easy out
Just be careful not to break the "easy out" off in the bolt. Easy leaves the equation when you do that

If it is a counter sunk head (sit flush with surface) I will drill the head off and then remove with vice grips
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Old 10-24-2012, 07:42 AM   #22
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Among other things my company is a "last resort" for people with broken/stripped bolts that they have to get out of expensive parts, engine heads, etc. Before we even touch them with a tool we will carefully heat the bolt up (bolt only...not the surrounding metal) to cherry red with a small torch tip and let them cool back down. This completely breaks them loose where they spin out easily with whatever tool you use.
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Old 10-24-2012, 07:48 AM   #23
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Ja get it out?
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Old 10-24-2012, 08:03 AM   #24
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Quote:
Originally Posted by Snipehunter View Post
Use a flat head screw driver. Tap it in.
yep this works
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Old 10-24-2012, 08:03 AM   #25
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When the head is recessed, you can not use the cut a slot trick. I restored a 1950s craftsman jointer and the screws that hold the blades in the cutter head were recessed allens. Same thing happened to me. I stripped over half of them without them budging. I took a torque bit that was a size too big and hammered it into the head. Then used a cordless impact to get them loose. Worked great.
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Old 10-24-2012, 08:08 AM   #26
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Quote:
Originally Posted by Snipehunter View Post
Use a flat head screw driver. Tap it in.
exactly what I was thinking.
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Old 10-24-2012, 08:24 AM   #27
Playa
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Quote:
Originally Posted by Swampa View Post
Ja get it out?
Nope. Tried both a flat head and a larger sized torx wrench this morning. That bugger is stuck like chuck.

may pick up a dremel later today, if that doesen't work, ill take it to a machine shop and have them drill the head out.
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Old 10-24-2012, 08:37 AM   #28
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Quote:
Originally Posted by Playa View Post
Nope. Tried both a flat head and a larger sized torx wrench this morning. That bugger is stuck like chuck.

may pick up a dremel later today, if that doesen't work, ill take it to a machine shop and have them drill the head out.
Did you see my earlier tip to heat it up red hot?
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Old 10-24-2012, 08:57 AM   #29
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What is the screw in? If it is for your sight mount, it is a #10 screw. Take a 3/16 drill bit and drill just deep enough for the head to pop off. Take the mount off and you can get vise grips on the threads that are sticking up.
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