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Author Topic: Head bolt size  (Read 1237 times)

Online Paul Taylor

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Head bolt size
« on: March 25, 2008, 08:57:01 PM »
Anyone know what size the head bolt is for an OS .25?

Thanks
Paul
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Paul
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Offline Garf

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Re: Head bolt size
« Reply #1 on: March 25, 2008, 10:08:05 PM »
S, FP, or LA?
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Online Paul Taylor

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Re: Head bolt size
« Reply #2 on: March 26, 2008, 08:23:16 AM »
Opps.

FP
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Paul
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Offline john e. holliday

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Re: Head bolt size
« Reply #3 on: March 26, 2008, 08:34:37 AM »
I always go to m y local ACE Hardware store to get metric socket head screws for my OS engines.  I just start thru the bins until I find what I need.  They're getting used to me carrying in engines.  DOC Holliday
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Offline Bill Gruby

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Re: Head bolt size
« Reply #4 on: March 26, 2008, 08:52:55 AM »
 I could be wrong but I believe it is an M3 Paul. At least it's a place to start. I know the LA is an M3.

  "Billy G"  H^^
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Offline don Burke

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Re: Head bolt size
« Reply #5 on: March 26, 2008, 09:01:21 AM »
FP has six head bolts, same thread as the cover plate, just longer.  2.5 mm

LA has four head bolts, 3mm
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don Burke AMA 843
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Offline don Burke

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Re: Head bolt size
« Reply #6 on: March 26, 2008, 09:09:14 AM »
Tower parts, note these for the FP are the dreaded JIS "quasi-phillips" heads, not allen socket!

http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXCV24&P=SM

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don Burke AMA 843
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Offline Geoff Goodworth

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Re: Head bolt size
« Reply #7 on: March 27, 2008, 02:25:47 AM »
Tower gives you the screw sizes.  Buy socket head screws from Micro Fasteners.  7mm long is a bit scarce but it's easy to cut down something longer for the backplate.

Cheers, Geoff
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