1903a3 action screws

Discussion in 'Gunsmithing' started by aggie99, Oct 16, 2009.

  1. aggie99

    aggie99 Well-Known Member

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    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: Oct 16, 2009
  2. orwapitihunter

    orwapitihunter Well-Known Member

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    They are 1/4X24 tpi
     

  3. kc

    kc Well-Known Member

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    check with Sarco.
     
  4. aggie99

    aggie99 Well-Known Member

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    Sep 16, 2008
    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.