Mounting lag bolts?

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  • Grant
    Senior Member
    • Aug 2016
    • 26

    Mounting lag bolts?

    I am soon to mount my replacement A4 in my Tartan 34C (rigid mount) and I need to replace 2 of the lag bolts the stick up from the engine bed. They are bronze with about an 1 and 1/8 machine thread and 2 inches of wood screw thread. 1 inch unthreaded area between the 2 different threads. 3/8 diameter. 4 inch overall length. Does anyone know of a supplier for these? Any help is appreciated. Grant.
  • jcwright
    Afourian MVP
    • Jul 2012
    • 158

    #2
    Hanger bolts

    When I built a new engine bed on our Tartan 34C, I was unable to find an exact match to the lag bolts I removed. The bolts that were the closest match were:

    Hamilton Marine Hanger bolt BRZ .38 x 4.00. Mfg #112477
    Jamestown Distributors Hanger bolt Sil Bronze 3/8 x 5 # FSBHB38x5

    My recollection is that the unthreaded sections were less than 1".

    I hope this is of some help.

    Best regards,

    Jack

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    • azazzera
      Senior Member
      • Aug 2014
      • 255

      #3
      Don’t know if they may have what you are looking for but they have a lot

      Bolt depot.com

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      • Grant
        Senior Member
        • Aug 2016
        • 26

        #4
        Jack, Thank You. I will get in touch with them Tuesday. Azazzera, I will take a look there. Thanks also. My engine beds seem good and solid, but whoever removed the old engine bent the studs, so I want to replace them. ____Grant.

        Comment

        • edwardc
          Afourian MVP
          • Aug 2009
          • 2491

          #5
          McMaster-Carr has them in stainless:
          McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.
          Last edited by edwardc; 09-01-2018, 03:50 PM. Reason: Corrected link
          @(^.^)@ Ed
          1977 Pearson P-323 "Dolce Vita"
          with rebuilt Atomic-4

          sigpic

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          • romantic comedy
            Afourian MVP
            • May 2007
            • 1912

            #6
            You may want to stick a piece of dowel in the hole for the lag. It will help it not to strip. All mine stripped on my T34.

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