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Old 02-10-2018, 12:40 PM   #1
Jammin
 
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Stripped Hex Head - How do I get it out?

I got me some new wheels! This sexy DRZ. Rich's old bike. Poor thing has been sitting for 2 years and the carb needs a deep clean. Just took delivery of the bike and see that one of the seat bolts has a problem:

The hex head has been stripped - how do I get it out?



I thought initially about drilling a small hole (slow going) then putting a self-tapping sheet metal screw? Not sure that's going to work. Welding might be another idea but she's not running well now and not sure I could ride her to a shop, also don't have a trailer. Ideas?

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Old 02-10-2018, 12:41 PM   #2
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Re: Stripped Hex Head - How do I get it out?

left hand drill bit 1/4" that should be a 6mm fastener. So the left hand bit will either back out the fastener, or remove the head leaving you the fastener body you can remove with pliers
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Old 02-10-2018, 12:44 PM   #3
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Re: Stripped Hex Head - How do I get it out?

Oh, and replace those reduced size drive socket head cap screw with a standard head cap screw or a reduced drive size hex head screw as found commonly on Japanese motorcycles.
The reduced drive size button heads or tapered head like you have there are commonly rounded out after they get just a bit of corrosion or use of thread lock.
SS fasteners make these issues worse due to the softer material than a more standard black oxide or cad plated
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Old 02-10-2018, 12:56 PM   #4
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Re: Stripped Hex Head - How do I get it out?

Great, thanks for that, Eric. Will try that.

Yeah, going to replace these bolts with standard hex heads.
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Old 02-10-2018, 12:58 PM   #5
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Re: Stripped Hex Head - How do I get it out?

Might be able to hammer a torx bit in there also and use a hand impact to remove it also.
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Old 02-10-2018, 12:58 PM   #6
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Re: Stripped Hex Head - How do I get it out?

Quote:
Originally Posted by E.Marquez View Post
Oh, and replace those reduced size drive socket head cap screw with a standard head cap screw or a reduced drive size hex head screw as found commonly on Japanese motorcycles.
The reduced drive size button heads or tapered head like you have there are commonly rounded out after they get just a bit of corrosion or use of thread lock.
SS fasteners make these issues worse due to the softer material than a more standard black oxide or cad plated
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Old 02-10-2018, 02:09 PM   #7
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Re: Stripped Hex Head - How do I get it out?

Sock-it out Never fails. Thanks to MitchnTX. A little pricey, but great tools usually are.
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Old 02-10-2018, 02:13 PM   #8
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Re: Stripped Hex Head - How do I get it out?

Sears Craftsman has one also that would help. Think they were $10 and have three extractors in the little red case.
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Old 02-10-2018, 02:31 PM   #9
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Re: Stripped Hex Head - How do I get it out?

I got it out! Hammered this square bit that came in my drill bit case (what's this used for?) and then slowly backed it out with the drill. Phew.



Thanks for all the other tips.

Now onto the serious fun of cleaning this carb out.
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Old 02-10-2018, 02:45 PM   #10
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Re: Stripped Hex Head - How do I get it out?

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Originally Posted by Jammin View Post
I got it out! Hammered this square bit that came in my drill bit case (what's this used for?) and then slowly backed it out with the drill. Phew.



Thanks for all the other tips.

Now onto the serious fun of cleaning this carb out.
(Just another drive, like Phillips or standard/straight slot.)
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Old 02-10-2018, 03:18 PM   #11
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Re: Stripped Hex Head - How do I get it out?

Campers and enclosed trailers use square bit screws. Not sure why.
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Old 02-10-2018, 04:39 PM   #12
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Re: Stripped Hex Head - How do I get it out?

Recently worked on a very similar predicament. Tapped in the closest sized Torx bit and that did the trick this time. Past problems have resulted in 50/50 success before resorting to drilling it out. Which I consider a last resort. Too easy to goof things up getting off alignment.

Glad you got that one out without much more drama.

Square drive: I have also seen it in very old furniture. For such a limited application, I find it odd there are sq drive bits in every set I have. I don't think I have properly used them but once.
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Old 02-10-2018, 04:57 PM   #13
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Re: Stripped Hex Head - How do I get it out?

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Campers and enclosed trailers use square bit screws. Not sure why.
hey, I have lots of these, but no camper. Well I got a Big S vise for my Big S table. You need to bring your 650 back by and we will clamp it in. I only got a 6 inch, but I figure it is an interim solution.

I am glad I got a new way to pull out stuck bolts, thanks.
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Old 02-10-2018, 05:40 PM   #14
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Re: Stripped Hex Head - How do I get it out?

Quote:
Originally Posted by E.Marquez View Post
Oh, and replace those reduced size drive socket head cap screw with a standard head cap screw or a reduced drive size hex head screw as found commonly on Japanese motorcycles.
The reduced drive size button heads or tapered head like you have there are commonly rounded out after they get just a bit of corrosion or use of thread lock.
SS fasteners make these issues worse due to the softer material than a more standard black oxide or cad plated

Agreed. Also when you put the stuff back, if you are using a stainless screw, put a little anti-seize on it. I've found even on steel subframes stainless bolts tend to gall a little. I guess its the slight difference in metals.
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Old 02-10-2018, 05:58 PM   #15
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Re: Stripped Hex Head - How do I get it out?

It's really hard to underestimate the "oh crud" moment saving that a set of bolt extractors can provide.

https://www.amazon.com/ATE-Tool-piec.../dp/B0002UJNWE



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Old 02-10-2018, 06:14 PM   #16
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Stripped Hex Head - How do I get it out?

Quote:
Originally Posted by rpcraft View Post
Agreed. Also when you put the stuff back, if you are using a stainless screw, put a little anti-seize on it. I've found even on steel subframes stainless bolts tend to gall a little. I guess its the slight difference in metals.


Youíre dead on with the Galvanic corrosion that happens because of dissimilar metals
when you need that insulation for Galvanic corrosion and vibration resistance anaerobic thread lock will address both issues.
Something like the seat bolts a drop of Loctite number 222 which is purple in color and light weight is perfect
vibration resistance and seals the thread
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Old 02-10-2018, 06:30 PM   #17
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Stripped Hex Head - How do I get it out?

Quote:
Originally Posted by dukey33 View Post
Recently worked on a very similar predicament. Tapped in the closest sized Torx bit and that did the trick this time. Past problems have resulted in 50/50 success before resorting to drilling it out. Which I consider a last resort. Too easy to goof things up getting off alignment.



Glad you got that one out without much more drama.



Square drive: I have also seen it in very old furniture. For such a limited application, I find it odd there are sq drive bits in every set I have. I don't think I have properly used them but once.


Upfront let me say if it works it wasnít wrong
I find it so interesting that one personís last resort is another personís first way

For me hammering a tool into a screw to remove it would be my last resort.

But a for a fastener like that that one here already has a perfectly centered hole and you simply need to run a left hand drill bit into it seems like the right idea

Unless itís cross threaded or physically connected somehow the left hand drill almost always reverses it out or you now have a nice hole to use an extractor in or in this case you could simply grab the remaining bit of faster and unscrew it

One of the most unfun and tedious repair jobs a mechanic or machinist has to do is dealing with somebody elseís misguided attempt to remove a broken fastener like you mentioned and off-center drill hole thatís now destroyed the threaded part of the assembly or a broken extractor or drill bit that has to be removed first

There is another kind of extractor combination drill that I picked up from all places sears though just about all the Tool manufacturers make them as well


This style from craftsman as well as this style


Have done wonders it removing corroded and seized carburetor fuel screws

Not something you can do by hand but in a high-quality drill press or better a mill Iíve had really good luck at saving carburetors that have stripped out or seized if youíre screwed
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Last edited by E.Marquez; 02-10-2018 at 06:35 PM.
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Old 02-10-2018, 07:00 PM   #18
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Re: Stripped Hex Head - How do I get it out?

I'm surprised no one mentioned heating up a seized fastener. I have freed more seized bolts than I can remember using a plumbers torch.
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Old 02-10-2018, 07:03 PM   #19
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Re: Stripped Hex Head - How do I get it out?

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I'm surprised no one mentioned heating up a seized fastener. I have freed more seized bolts than I can remember using a plumbers torch.


The plastic seat and vinyl seat pad as well as the paint and plastic side cover might not work out well for this one with heat but your point is really valid as long as itís not a physical cross thread bolt bottomed out etc.
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Old 02-11-2018, 03:52 AM   #20
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Re: Stripped Hex Head - How do I get it out?

Jammin, glad you got it out. IMO, if it didn't damage tools, work piece or you made a calculated sacrifice and succeeded, you're good.

Lots of ways to skin a cat. I've done several methods in situations on the truck...bolt extractor, hammering a bit into the rounded head, spot welding a hex nut...Just depends... Glad you got it.

Now, what's up with that carb?
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