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help with finding a bolt

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cristalclear13

Joined: 19 Sep 2007
Posts: 363
Location: Southeast Georgia

Posted: Thu May 07, 2009 5:44 am Post subject: help with finding a bolt

Hi.  If someone would have some extra time (which I seem to be lacking this week) could I get some help finding a bolt?  A friend of mine discovered that one of the six bolts holding my prop on was broken as he was looking my plane over.  



The company that makes my wooden prop is no longer in business or I would call them.  We can't find the bolt at any local stores here.  My friend measured it and says I need 8m  x 90mm long with standard 1.25 thread.  The bolt needs 25mm of thread.



I won't even be able to get to the airport until Saturday and was hoping to get a head start on finding a replacement.

_________________
Cristal Waters
Kolb Mark II Twinstar Rotax 503 DCSI Sept 2007 - sold Sept 2012
Private Pilot Aug 2008
ELSA Repairman for N193Y April 2008
Rotax 2 stroke maintenance April 2009

John Hauck

Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)

Posted: Thu May 07, 2009 6:00 am Post subject: help with finding a bolt

> The company that makes my wooden prop is no longer in business or I would 

call them.  We can't find the bolt at any local stores here.  My friend 

measured it and says I need 8m  x 90mm long with standard 1.25 thread.  The 

bolt needs 25mm of thread.

 > Cristal Waters

I'm probably not going to be much help.



Waycross should have a "fastener" store that carries nuts and bolts, 

washers, pop rivets, etc.



If you have time take one of the good bolts with you to match the new one.



I get all my 8mm prop bolts from a fastener store in Montgomery, AL.



john h

mkIII

_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

lucien

Joined: 03 Jun 2007
Posts: 721
Location: santa fe, NM

Posted: Thu May 07, 2009 6:05 am Post subject: Re: help with finding a bolt

 	  cristalclear13 wrote: 	
		  Hi.  If someone would have some extra time (which I seem to be lacking this week) could I get some help finding a bolt?  A friend of mine discovered that one of the six bolts holding my prop on was broken as he was looking my plane over.  



The company that makes my wooden prop is no longer in business or I would call them.  We can't find the bolt at any local stores here.  My friend measured it and says I need 8m  x 90mm long with standard 1.25 thread.  The bolt needs 25mm of thread.



I won't even be able to get to the airport until Saturday and was hoping to get a head start on finding a replacement. 	




Heh, I just got through with an exercise like this.



First, before you do anything else, try to find out why the bolt broke in the first place? Broken prop bolts are a dangerous symptom (why I've been so worried about the harmonics problem I've been having with my WD). 



Next, try a Fastenal if there's one in your area, you probably need something like this:



http://www.fastenal.com/web/products/detail.ex?sku=39128&ucst=t



Don't bother trying to find an aircraft grade metric bolt in the US - no such animal. Generally, grade 8.8 (which corresponds to grade 5 in English sized bolts) has the ductility you need for prop bolts. 

5/16" are virtually the same as M8 diameter-wise, but the normal national coarse thread won't work in a 1.25 threaded 8mm hole (so if you attach to the flange with backing nuts only, 5/16" are a suitable substitute).



LS

_________________
LS
Titan II SS

cristalclear13

Joined: 19 Sep 2007
Posts: 363
Location: Southeast Georgia

Posted: Thu May 07, 2009 6:08 am Post subject: Re: help with finding a bolt

 	  John Hauck wrote: 	
		  

I'm probably not going to be much help.



Waycross should have a "fastener" store that carries nuts and bolts, 

washers, pop rivets, etc.



If you have time take one of the good bolts with you to match the new one.



I get all my 8mm prop bolts from a fastener store in Montgomery, AL.



john h

mkIII 	




Thanks John.  Maybe I can break away from work for a bit and try that.  We do have a store called Fastenal.  



Looks like you are getting some pretty good storms this morning?  Which day do you plan to leave for MV?

_________________
Cristal Waters
Kolb Mark II Twinstar Rotax 503 DCSI Sept 2007 - sold Sept 2012
Private Pilot Aug 2008
ELSA Repairman for N193Y April 2008
Rotax 2 stroke maintenance April 2009

herbgh(at)nctc.com
Guest

Posted: Thu May 07, 2009 6:08 am Post subject: help with finding a bolt

Advanced Auto stocks some Metric bolts..and they likely can have them 

in overnight.. Herb

At 08:57 AM 5/7/2009, you wrote:

 	  Quote: 	

 > The company that makes my wooden prop is no longer in business or 

 I would call them.  We can't find the bolt at any local stores 

 here.  My friend measured it and says I need 8m  x 90mm long with 

 standard 1.25 thread.  The bolt needs 25mm of thread.

 > Cristal Waters

I'm probably not going to be much help.

Waycross should have a "fastener" store that carries nuts and bolts, 

washers, pop rivets, etc.

If you have time take one of the good bolts with you to match the new one.

I get all my 8mm prop bolts from a fastener store in Montgomery, AL.

john h

mkIII

Checked by AVG - www.avg.com

05/06/09 17:58:00

aslsa.rng(at)gmail.com
Guest

Posted: Thu May 07, 2009 6:13 am Post subject: help with finding a bolt

If you can't find them locally, McMaster Carr has them. Part No. 91280A560, but you have to buy a lifetime supply (25) at about 50 cents each. 



Rick



On Thu, May 7, 2009 at 8:44 AM, cristalclear13 <cristalclearwaters(at)gmail.com (cristalclearwaters(at)gmail.com)> wrote:

 [quote]--> Kolb-List message posted by: "cristalclear13" <cristalclearwaters(at)gmail.com (cristalclearwaters(at)gmail.com)>

  

 Hi.  If someone would have some extra time (which I seem to be lacking this week) could I get some help finding a bolt?  A friend of mine discovered that one of the six bolts holding my prop on was broken as he was looking my plane over.

  

 The company that makes my wooden prop is no longer in business or I would call them.  We can't find the bolt at any local stores here.  My friend measured it and says I need 8m  x 90mm long with standard 1.25 thread.  The bolt needs 25mm of thread.

  

 I won't even be able to get to the airport until Saturday and was hoping to get a head start on finding a replacement.

 

 --------

 Cristal Waters

 Kolb Mark II Twinstar

 Rotax 503 DCSI

 

 

 

 

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John Hauck

Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)

Posted: Thu May 07, 2009 6:22 am Post subject: help with finding a bolt

> Thanks John.  Maybe I can break away from work for a bit and try that. 

We do have a store called Fastenal.

 	  Quote: 	
		  

 Looks like you are getting some pretty good storms this morning?  Which 

 day do you plan to leave for MV?



 --------

 Cristal Waters


	




Fastenal will have exactly what you are looking for.



I don't think you need to be too alarmed with a broken prop bolt on a 503. 

I remember breaking my share of them on my 447 with wooden prop.  I have 

also broken a couple over the years on the 912 engines.  Never have found 

out why, except the will break occasionally.



We have been getting beat up with thunderstorms, heavy rain, and wind for 

three days.  Hoping it will all blow out of here by next Tuesday morning 

when I leave for Sherman, TX.



Looks like we will have four mkIII's and a J5 Cub meeting at Sherman for the 

flight out to Los Lunas, NM, and Monument Valley.  From MV we intend to fly 

up to Oregon and spend a few days with Larry and Karen Cottrell.  We will 

pick up Mike Marker and his RANS S-18 for that part of the flight.  There 

are some other folks that may fly if they can get their work schedule and 

aircraft problems sorted out.



Looks like we are going to have a good Unplanned/Unorganized Kolb Flyin, 

Monument Valley, for the seventh consecutive year.  Wish all of you could be 

with us next week.



john h

mkIII

_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

lcottrell

Joined: 29 May 2006
Posts: 1494
Location: Jordan Valley, Or

Posted: Thu May 07, 2009 8:19 am Post subject: help with finding a bolt

Cristal,

     The only place that I could find metric  bolts of that size was at a John Deere tractor supply.

 Larry C

 [quote]   ---

_________________
do not archive

herbgh(at)nctc.com
Guest

Posted: Thu May 07, 2009 8:27 am Post subject: help with finding a bolt

one last time...   



   Advanced Auto sold me metric bolts of correct length...8.8s...  try them...Herb 



 

 At 11:03 AM 5/7/2009, you wrote:

 [quote]Cristal,

     The only place that I could find metric bolts of that size was at a John Deere tractor supply.

 Larry C

   ---

lucien

Joined: 03 Jun 2007
Posts: 721
Location: santa fe, NM

Posted: Thu May 07, 2009 8:57 am Post subject: Re: help with finding a bolt

 	  John Hauck wrote: 	
		  > Thanks John.  Maybe I can break away from work for a bit and try that. 

We do have a store called Fastenal.

 	  Quote: 	
		  

 Looks like you are getting some pretty good storms this morning?  Which 

 day do you plan to leave for MV?



 --------

 Cristal Waters



	




Fastenal will have exactly what you are looking for.



I don't think you need to be too alarmed with a broken prop bolt on a 503. 

I remember breaking my share of them on my 447 with wooden prop.  I have 

also broken a couple over the years on the 912 engines.  Never have found 

out why, except the will break occasionally.



We have been getting beat up with thunderstorms, heavy rain, and wind for 

three days.  Hoping it will all blow out of here by next Tuesday morning 

when I leave for Sherman, TX.



Looks like we will have four mkIII's and a J5 Cub meeting at Sherman for the 

flight out to Los Lunas, NM, and Monument Valley.  From MV we intend to fly 

up to Oregon and spend a few days with Larry and Karen Cottrell.  We will 

pick up Mike Marker and his RANS S-18 for that part of the flight.  There 

are some other folks that may fly if they can get their work schedule and 

aircraft problems sorted out.



Looks like we are going to have a good Unplanned/Unorganized Kolb Flyin, 

Monument Valley, for the seventh consecutive year.  Wish all of you could be 

with us next week.



john h

mkIII 	




I may have too much time pressure to make the trip, but if I do it'll probably be crack of dawn Fri. morning then return crack of dawn Sat. 



I'm not optimistic about the winds either, we've had a late spring here and 15G25 is a pretty calm day......

Get-back-itis may be the main hazard (have to be in office Mon. morning or else), so my plans are tentative at this point.....



LS

_________________
LS
Titan II SS

cristalclear13

Joined: 19 Sep 2007
Posts: 363
Location: Southeast Georgia

Posted: Thu May 07, 2009 10:29 am Post subject: Re: help with finding a bolt

 	  John Hauck wrote: 	
		  

Fastenal will have exactly what you are looking for.



	




Thank you all for your responses.  Fastenal will order them and get them here by Monday.



Thanks!

_________________
Cristal Waters
Kolb Mark II Twinstar Rotax 503 DCSI Sept 2007 - sold Sept 2012
Private Pilot Aug 2008
ELSA Repairman for N193Y April 2008
Rotax 2 stroke maintenance April 2009

slyck(at)frontiernet.net
Guest

Posted: Thu May 07, 2009 2:12 pm Post subject: help with finding a bolt

Fastenal had the equivalent of the fabric rivets when I was building  

my (left) wing.  Nice to walk in and walk out with what you need today.

BB



On 7, May 2009, at 2:29 PM, cristalclear13 wrote:



 	  Quote: 	
		   

 <cristalclearwaters(at)gmail.com>

 John Hauck wrote:

>

> Fastenal will have exactly what you are looking for.

 Thank you all for your responses.  Fastenal will order them and get  

 them here by Monday.



 Thanks!  



 --------

 Cristal Waters

 Kolb Mark II Twinstar

 Rotax 503 DCSI





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p 43050#243050

Dana

Joined: 13 Dec 2007
Posts: 1047
Location: Connecticut, USA

Posted: Thu May 07, 2009 2:40 pm Post subject: help with finding a bolt

At 09:44 AM 5/7/2009, cristalclear13 wrote:

 	  Quote: 	
		  

<cristalclearwaters(at)gmail.com>



Hi.  If someone would have some extra time (which I seem to be lacking 

this week) could I get some help finding a bolt?  A friend of mine 

discovered that one of the six bolts holding my prop on was broken as he 

was looking my plane over.



The company that makes my wooden prop is no longer in business or I would 

call them.  We can't find the bolt at any local stores here.  My friend 

measured it and says I need 8m  x 90mm long with standard 1.25 

thread.  The bolt needs 25mm of thread.


	


McMaster <http://mcmaster.com> has it.

--

  Q: Why is it that New Jersey got all the toxic waste dumps and California 

got all the lawyers?

A: New Jersey had first choice.

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