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S&W 640-1 What do I need and where do I get it?

Discussion in 'Gunsmithing and Repairs' started by Topgun, Apr 28, 2004.

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  1. Topgun

    Topgun member

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    LUCKILY...it lasted thru my CCW qual today. It hitched once but I got it going. Cleaned it and got the trigger stuck back.

    Took off sideplate and ....golly....there's the firing pin in the works.

    In the picture, the arrow points to the hole of what I need. S&W and Brownells list a firing pin bushing and a bushing pin.

    Doesn't look to me like a bushing of any sort. Looks like some cheap pin that is only held in by the sideplate and I probably lost it at some time with the sideplate off. The firing pin is notched for a retainer slot.

    What I need looks more like a RETAINING PIN than any other nomenclature.

    Who might have one and what is it called? It is certainly a cheap way to retain a part. Could it possibly have been threaded on the deep end with a screw slot to remove? WHATEVER the gizmo is, it will have to be a fairly LOOSE fit or there would be no way to remove it in the future.

    Any ideas?

    Damn good thing I didn't have to qualify at anything UPHILL or the firing pin would have dropped into the works.

    640-1 ser # CAF 60XX
    http://www.tech-line.com/hockit/innards.JPG

    Any info greatly appreciated. Other than paper clip as I have thought of that and rejected it.


    :(
     
  2. Clemson

    Clemson Member

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    You need the "firing pin bushing pin." Cost is around $1.25. If you can find a Nurich catalog, you can see a schematic. The pin is the same one that S&W has used for years to hold the firing pin bushing in rimfire revolvers. The firing pin itself rides in that bushing.

    You also probably need to completely disassemble the innards to insure that the old pin is not kicking around in there somewhere.

    Good luck!

    Clemson
     
  3. Topgun

    Topgun member

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    Also sent picture to S&W and got back email calling it the "firing pin retaining pin."

    AND.......they are shipping it no charge to me.

    NICE customer service policy.

    Hmmmmm.....do I need a new barrel? heheh

    :D
     
  4. Blueduck

    Blueduck Member

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    Several years ago the firing pin on my brand new 640-1, broke as well.

    Anyone know if this is common problem, or just coincidense:confused:
     
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