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Thread: Krag stacking swivel screw size/thread

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  1. #11
    Legacy Member butlersrangers's Avatar
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    The damaged threads for the Stacking-Swivel Screw, on your Kragicon front barrel-band, may respond and be 'trued-up' by using the front-band retaining screw as a tool.

    Insert the long smooth shank into the threaded lug until the screw's threads make contact. Carefully index and start the screw into the threaded lug. If the threads 'mesh', the screw will turn through and straighten the thread damage.

    Yes, the band-retaining screw is also 26 TPI. (The same screw is used to retain a 1903 Sringfield front-band).

    Attachment 88579
    Last edited by butlersrangers; 11-16-2017 at 11:44 PM.

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  4. #12
    Advisory Panel browningautorifle's Avatar
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    Quote Originally Posted by butlersrangers View Post
    The same screw is used to retain a 1903 Springfield front-band
    Wondered how long it would be until that came out...
    Regards, Jim

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    Legacy Member Der Jagar's Avatar
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    Quote Originally Posted by browningautorifleicon View Post
    Wondered how long it would be until that came out...
    "Inquiring minds need to know"


    Just to give an update on my Kragicon stacking screw dilemma, last Friday(11-17), I took a good look with a very bright light into the threads of the stacking swivel and approximately in the middle of the threads there appeared to be a build up of "something" deep in the threads. I took a small needle pointed awl with a bend in the end and picked out whatever the material was. Wasn't rust, some hard brownish substance, rock hard. Couldn't see any thread damage, so took 'butlersrangers' idea and screwed the front barrel band screw in (lubed it first) and it screwed in with no resistance. Tried the stacking screw and went in and seated with no problem. Happy camper am I.

    Took a look at the S&S website 'no4mk1t' posted, be a good site for obtaining scarce items, but at $6 for a screw, plus $7 shipping, pricey, but a last resort I guess. Very interesting info he posted on screw/thread pitch history. Wasn't aware of all the history behind the use of size/pitch, ie USS, UTS, SAE. Very interesting reads, esp. the formula's used to obtain pitch/tpi. Reference the 03 Springfield in continuing the use of the USS threads, I wonder how long they did so. Wonder if Remington continued the use after they started their 03 manufacturing in the early 40's, assume so to continue the interchange of various same parts. 'butlersrangers', your mention of possible Frenchicon influence is something I read also, might have been on the KCA Forum, might have been something you posted. Be interesting project to read upon.

    Good information on the web about what was used in the late 1800's and early 1900's. Tried to find some information as to when firearm manufactures switched from the USS screw size/pitch to the UTS/SAE format. If anyone knows of any chart, listing, etc that gives the screw sizes/thread tpi of firearms made since say the late 1800's to present day, it would be very interesting. Went to a local gun show last weekend and talked to the gunsmith I mentioned in earlier post and talked with him about the Krag. He advised as to what most have posted here about the Krag's screws being odd size compared to what is used today. Advised he had a few taps/dies of early used screws and finding them is a hard search. Anyway, problem solved, thank you to all who posted info and advice. Was going to post info last weekend, but busy, busy. Happy Thanksgiving to all.

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    Advisory Panel browningautorifle's Avatar
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    Quote Originally Posted by Der Jagar View Post
    Wasn't rust, some hard brownish substance, rock hard.
    Probably just cosmolineicon...nothing magic.
    Regards, Jim

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    Legacy Member Der Jagar's Avatar
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    Quote Originally Posted by browningautorifleicon View Post
    Probably just cosmolineicon...nothing magic.
    That crossed my mind also, but have never seen cosmoline get that hard, the substance was almost like dried varnish or something similar, hard and brittle. The stock wasn't refinished though, still had linseed type org finish on it. Anyway, Kragicon is now complete as far as what it should have attached.

  10. #16
    Advisory Panel browningautorifle's Avatar
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    Quote Originally Posted by Der Jagar View Post
    the substance was almost like dried varnish
    That's right, but yes it could have also been dried varnish or motor oil. Lots of guys used to use any oil at hand and motor oil is so heavy as to turn to a varnish like coat after time. I've removed lots with mineral spirits and such.
    Regards, Jim

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    Legacy Member Der Jagar's Avatar
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    Some guys still do it today. Talked with a LEO friend in my state who worked on dept and general population guns. Advised two of the worst he saw was one guy used super glue on the threads of a N frame S&W so they wouldn't back out during recoil, only problem when the guy tried to take the gun apart for cleaning--no dice. Another guy used some 90W gear oil on his semiauto Remington shotgun (for super lubrication the owner thought)--only problem was worked fine in his heated basement, but didn't work so well out in the cold duck blind. I've seen some pretty lame things done also in the years I've spent shooting and hunting.

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