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Anybody know offhand the threading on a late 1960's Model 37 stock bolt? The one I have is 5-1/8 inches long, with a square, slotted head. I want to switch it out to a hex head. I can take it in to the hardware store and figure it out, but since I'm at my computer and not near that store, I thought I'd just ask.


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i assume you are refering to an Ithaca 37. if i remember correctly it is 1/4-20

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Why the switch to a hex head?

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Originally Posted by shooter42
i assume you are refering to an Ithaca 37. if i remember correctly it is 1/4-20


Yep, Ithaca. 1/4 x 20 does indeed work, so thanks.

Originally Posted by Cheesy
Why the switch to a hex head?


Much easier to slip a socket on an extension down the hole onto the hex head, to either tighten or loosen. Original square head is 1/2", so the drive end of the extension will fit but then I have to put a vice grip on it. The slot in the head is hard to find with a long screwdriver. Plus, my other 37's have hex heads. Reason for the operation to begin with is that I'm fitting another stock to it.

Thanks for the responses.


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I’m pretty sure I used a regular ol’ 12 point socket to remove mine. Can’t remember the size. Will have to check when I get home tonight.

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7/16” 12 point socket from my Craftsman 3/8 drive set works great on my 16 gauge from early 50s. Just pulled the butt off using it.

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Originally Posted by Cheesy
7/16” 12 point socket from my Ctaftsman 3/8 drive set works great on my 16 gauge from early 50s. Just pulled the butt off using it.


^^^ That's what I use.


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Originally Posted by Cheesy
7/16” 12 point socket from my Craftsman 3/8 drive set works great on my 16 gauge from early 50s. Just pulled the butt off using it.


Thanks. I'm sure my father, whose gun this was, knew that, but I didn't think about trying a 12 point socket. My go-to sockets are 6 point, so I'll rummage around and see if I can't find a set of 12's. If not, I can get the 1/4 x 20 x 5-1/8 hex to replace what I have. I knew I could count on the Campfire to help me out. Thanks again.


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