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1903a3 action screws

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Old 10-16-2009, 07:44 AM
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1903a3 action screws

I have a 1903a3 and the action screws need to be replaced. I also need to clean up the threads in the action but am having problems finding the right thread pitch. The screws that were in it are 1/4" and the new bolts have the same TPI but they are not 20 or 28 TPI. Does anyone have a reference manual which shows what the threads are suppose to be? The screws are very close to a metric 1.0 if that helps. Thanks in advance.

Last edited by aggie99; 10-16-2009 at 07:46 AM. Reason: more info
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Old 10-16-2009, 04:11 PM
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Join Date: Jan 2004
Location: Oregon
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Re: 1903a3 action screws

They are 1/4X24 tpi
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Old 10-18-2009, 09:39 AM
kc kc is offline
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Join Date: Jan 2003
Location: Swartz creek Mi
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Re: 1903a3 action screws

check with Sarco.
Keith Sage.
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Old 10-19-2009, 07:00 AM
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Join Date: Sep 2008
Posts: 145
Re: 1903a3 action screws

Thanks guys. I also emailed the guntec dept. at Brownels. They responded that the threads were 25tpi. I should have quite a set of 1/4" taps before I find the right one.
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