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? Screw head diameter?



 
 
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  #1  
Old January 1st 07, 01:17 PM posted to rec.aviation.homebuilt
Michael Horowitz
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Posts: 159
Default ? Screw head diameter?

MS24593 is a flat head machine screw with a 6-32 shank/thread. In this
application the diameter of the screwhead is important.

I went to HD and bought a 6-32 machine screw to see what length I
needed (the original having rusted beyond recognition). I compared the
HD screw with the MS and noticed it was 1/4" dia. as compared to 3/8",
so I'm wondering if I order the MS screw if the head will be large
enough.

The difference I'm seeing is caused by the 100^ angle on the MS screw,
but I don't know if the final diameter will match the original.

Would anyone with experience with the MS24593 screw please weigh in? -
Mike
  #2  
Old January 1st 07, 03:47 PM posted to rec.aviation.homebuilt
Morgans[_2_]
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Posts: 3,924
Default ? Screw head diameter?


"Michael Horowitz" wrote in message
...
MS24593 is a flat head machine screw with a 6-32 shank/thread. In this
application the diameter of the screwhead is important.

I went to HD and bought a 6-32 machine screw to see what length I
needed (the original having rusted beyond recognition). I compared the
HD screw with the MS and noticed it was 1/4" dia. as compared to 3/8",
so I'm wondering if I order the MS screw if the head will be large
enough.

The difference I'm seeing is caused by the 100^ angle on the MS screw,
but I don't know if the final diameter will match the original.

Would anyone with experience with the MS24593 screw please weigh in? -


I would be very curious as to what the application is for this screw.

If it is going to be any more important than holding a radio in the panel,
then you need to be thinking about the quality and strength of the screw.

HD screws have no strength guarantee, compared to a MS screw. They may have
only 10% of the strength of a MS screw. If that is the case, the head size
is the least of your worries.

I hope you are not using hardware store screws in your homebuilt for any
important functions. You are gambling your life. You could be a _big_
looser.
--
Jim in NC


  #3  
Old January 1st 07, 05:06 PM posted to rec.aviation.homebuilt
Michael Horowitz
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Posts: 159
Default ? Screw head diameter?

On Mon, 1 Jan 2007 09:47:48 -0500, "Morgans"
wrote:



I hope you are not using hardware store screws in your homebuilt for any
important functions. You are gambling your life. You could be a _big_
looser.



No, no, no, no

We do not use hardware from Home Depot Aerospace for anything except
non-structural things like holding the floorboards in place.

I mentioned HD and the cml screw because I thought the cml screw would
have the same profile as the MS screw and I could use it as a model of
what to purchase. What I didn't realize is that the underside angle of
the head (countersink) for the MS screw was different from the cml
screw, so that was a good idea gone bad.

Still don't know if a #6 MS24694 is going to give me a 3/8" dia head.


  #4  
Old January 1st 07, 06:40 PM posted to rec.aviation.homebuilt
Rich S.[_1_]
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Posts: 227
Default ? Screw head diameter?

"Morgans" wrote in message
news

I hope you are not using hardware store screws in your homebuilt for any
important functions. You are gambling your life. You could be a _big_
looser.


Doggone it, Morgan! Only six hours and forty-seven minutes into the new year
and you've already done it!

We've told you before, it's LOSER. Looser pertains to the state of your
bowels. :}

Rich S.


  #5  
Old January 1st 07, 06:59 PM posted to rec.aviation.homebuilt
John Kunkel
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Posts: 42
Default ? Screw head diameter?


"Michael Horowitz" wrote in message
...
MS24593 is a flat head machine screw with a 6-32 shank/thread. In this
application the diameter of the screwhead is important.

I went to HD and bought a 6-32 machine screw to see what length I
needed (the original having rusted beyond recognition). I compared the
HD screw with the MS and noticed it was 1/4" dia. as compared to 3/8",
so I'm wondering if I order the MS screw if the head will be large
enough.


A 6-32 countersunk screw with a 3/8" diameter head? Even a 10-32 screw with
a 100° countersink will barely be 3/8".

If you meant 3/16", then the difference in the head diameter is due to the
87° or 90° countersink on the hardware store screw.


  #6  
Old January 1st 07, 07:05 PM posted to rec.aviation.homebuilt
Michael Horowitz
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Posts: 159
Default ? Screw head diameter?

On Mon, 1 Jan 2007 09:59:15 -0800, "John Kunkel"
wrote:


"Michael Horowitz" wrote in message
.. .
MS24593 is a flat head machine screw with a 6-32 shank/thread. In this
application the diameter of the screwhead is important.

I went to HD and bought a 6-32 machine screw to see what length I
needed (the original having rusted beyond recognition). I compared the
HD screw with the MS and noticed it was 1/4" dia. as compared to 3/8",
so I'm wondering if I order the MS screw if the head will be large
enough.


A 6-32 countersunk screw with a 3/8" diameter head? Even a 10-32 screw with
a 100° countersink will barely be 3/8".

If you meant 3/16", then the difference in the head diameter is due to the
87° or 90° countersink on the hardware store screw.


I do believe you are correct; and I think I solved my problem.
Blueprint shows a simple 6-32 machine screw used vice the flat head;
I'll take that approach using an AN526 and countersink that - Mike



  #7  
Old January 1st 07, 07:22 PM posted to rec.aviation.homebuilt
Morgans[_2_]
external usenet poster
 
Posts: 3,924
Default ? Screw head diameter?


"Rich S." wrote in message
. ..
"Morgans" wrote in message
news

I hope you are not using hardware store screws in your homebuilt for any
important functions. You are gambling your life. You could be a _big_
looser.


Doggone it, Morgan! Only six hours and forty-seven minutes into the new
year and you've already done it!

We've told you before, it's LOSER. Looser pertains to the state of your
bowels. :}


CRAP ! ! ! g

The thing of it is, is that I nowe beter then that! ;-)
--
Jim in NC


  #8  
Old January 1st 07, 07:37 PM posted to rec.aviation.homebuilt
flybynightkarmarepair
external usenet poster
 
Posts: 106
Default ? Screw head diameter?


Michael Horowitz wrote:
MS24593 is a flat head machine screw with a 6-32 shank/thread. In this
application the diameter of the screwhead is important.

I went to HD and bought a 6-32 machine screw to see what length I
needed (the original having rusted beyond recognition). I compared the
HD screw with the MS and noticed it was 1/4" dia. as compared to 3/8",
so I'm wondering if I order the MS screw if the head will be large
enough.

The difference I'm seeing is caused by the 100^ angle on the MS screw,
but I don't know if the final diameter will match the original.

Would anyone with experience with the MS24593 screw please weigh in? -
Mike


http://assist.daps.dla.mil/quicksear...t_number=40617

Rev C has the complete dimensional specs.

  #9  
Old January 1st 07, 07:46 PM posted to rec.aviation.homebuilt
Rich S.[_1_]
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Posts: 227
Default ? Screw head diameter?

"Morgans" wrote in message
...

CRAP ! ! ! g

The thing of it is, is that I nowe beter then that! ;-)


That's ok. Hppy New yere anway. I fogot the rule that any post correcting
speling has to contain at least too errors.

Ricih S.


  #10  
Old January 1st 07, 08:24 PM posted to rec.aviation.homebuilt
Morgans[_2_]
external usenet poster
 
Posts: 3,924
Default ? Screw head diameter?


"Rich S." wrote in message
. ..
"Morgans" wrote in message
...

CRAP ! ! ! g

The thing of it is, is that I nowe beter then that! ;-)


That's ok. Hppy New yere anway. I fogot the rule that any post correcting
speling has to contain at least too errors.

Ricih S.


Foregiveden.

Happy New Year to you, too, and may the number of takeoffs you log equal the
number of landings you log.
--
Jim in NC


 




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