Sako Action

Discussion in 'Gunsmithing' started by 1eye, Jul 23, 2009.

  1. 1eye

    1eye Well-Known Member

    Messages:
    96
    Joined:
    Feb 8, 2009
    Is a Sako Action A-3 standard thread or metric and what thread and pitch.

    Thanks
     
  2. Wookie316

    Wookie316 Well-Known Member

    Messages:
    145
    Joined:
    Jul 13, 2009
    L61R, AIII & AV are all the same thread pitch. 691 & 75 & I believe 85 are all the same pitch. The TRG-S is metric for sure because I had a butcher of a gunsmith friction fit a standard thread for me & this was the result.

    [​IMG]


    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    I believe the L61R, AIII & AV are indeed 1x16 TPI. Someone may chime in & confirm this. :)
     

  3. RJ338

    RJ338 Well-Known Member

    Messages:
    97
    Joined:
    Dec 30, 2007
    The L61R and AV are 1.045 X 16 TPI, some of the later ones are 1.00 X 16 TPI.
     
  4. northernchris

    northernchris Active Member

    Messages:
    35
    Joined:
    Dec 18, 2006
    75 series I action ie .222/.223 is .928" x1.5mm
    75 series II and III action are between 1.000 and 1.040 x 16 TPI

    Early Sako/Tikka models can be any combination of the above.