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Looking for machinist that can make custom screws

Discussion in 'Gunsmithing and Repairs' started by Thisisyourcaptin, May 12, 2019.

  1. Thisisyourcaptin

    Thisisyourcaptin Member

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    im looking for a competent machinist that would be will to take on a small project. It’s two screws that I need made. All my local machine shops in Akron area are involved in the auto and tire industry and not will to take on a small project. I can supply the old screws with the correct thread that I need copied. I’m looking for a exact copies except with taller heads that I can file down to match the lower mag well and upper tang perfectly.

    Is there anyone on here will to take on a project like this?

    Nate
     
  2. George P

    George P Member

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    Have you tried any gunsmiths in your area? A good gunsmith should be able to do that. After all, some of the best hand-made guns in the world have their craftsmen do exactly that
     
  3. Thisisyourcaptin

    Thisisyourcaptin Member

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    I’ve looked. But but when they find out it’s for a mosin action they turn down the job. Only thing stock is the action. Everything else is custom. Was hopping that someone would take it on.

    Other prob is that I’m new to the Akron Oh area and don’t know the local gunsmiths at all. What few I ha r met don’t seem to do much more than what Interests them.
     
  4. shooter1niner

    shooter1niner Member

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    Could you use an Allen cap screw? They have taller heads than regular screws. If the threads are a standard metric thread that may be the way to go. Do you happen to know what the designation of the thread is? The screw diameter would be measured in millimeters as well as the pitch. It could be something like M6 x 1.0, that would be 6mm diameter with 1 mm between the threads. I have no idea what the correct diameter or pitch is for a Mosin... Hope this helped.
     
  5. MikeInOr

    MikeInOr Member

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    I think you are going to find that the shop time to setup and cut the screws is going to result in really expensive screws... most likely prohibitively expensive. After a screw size gets small you are better off using a die instead of trying to do a single point thread on a lathe.

    You might want to do some research and figure out the specifications... mainly the dia and thread pitch... find a similar screw that can have the head turned down to what you need. If you can find the proper die to cut the thread buy one, take it to a local machinist and then tell you what you need. You could probably get them pretty cheap if you come with the correct die in hand.
     
  6. MihiT

    MihiT Member

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    Any machinist *can* make whatever your want.
    As said above, that may be prohibitively expensive for you.
     
    ColtPythonElite and entropy like this.
  7. Old Shooter

    Old Shooter Member

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    If there is an ACE hardware store near you stop in and check their hardware fastener section. I was looking for an oddball gun screw a while back in Jacksonville Florida and was amazed at the large selection of sizes and styles of metric and standard screws in all sizes, including some very small ones. I did find the screw I was looking for.
     
  8. entropy

    entropy Member

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    Ace, Fleet Farm, Menards, any of them should have a substantial screw section with some metric screws (and testers to try your stock bolts in-be careful not to cross-thread!) that would work.
     
  9. beag_nut

    beag_nut Member

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    Plus, there's always Brownell's as a possible (even very likely) source of a suitable screw which could be easily modified.
     
  10. BBBBill

    BBBBill Member

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    Brownell's does sell unthreaded screw blanks.
     
  11. Kp321

    Kp321 Member

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    +1 on looking in Brownells.
    I'm not sure what the action screws on a Mosin are, never had the need to replace one. They might not be metric. Not sure Russia was on the metric system back in 1891.
     
  12. beag_nut

    beag_nut Member

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    Yes. I even got some #12's to mount my self-made peep sight not too long ago. Simple die job in the lathe.
     
  13. jmorris

    jmorris Member

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  14. Thisisyourcaptin

    Thisisyourcaptin Member

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  15. jmorris

    jmorris Member

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    Someone may have re threaded the receiver at some point since WWII.

    What is the size and thread pitch of the screws that do fit?
     
  16. Thisisyourcaptin

    Thisisyourcaptin Member

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    I’ll look when I get home. Hopefully tomorrow. On the road till then. The old screws look like they match the new ones for pitch but the old ones are a lot deeper for the minor cut.

    Is having the receiver drilled and tapped for a different screw an option? Has anyone done that?
     
  17. boom boom
    • Contributing Member

    boom boom Contributing Member

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  18. Mauser lover

    Mauser lover Member

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    How patient are you? Why exactly are you doing this? Cosmetics or function?

    PM me.
     
  19. MihiT

    MihiT Member

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  20. LRDGCO

    LRDGCO Member

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    My apologies for the hijack/digression.

    When did Mosin tooling go metric? Until 1917, Imperial Russia did not use the metric system. While known today as the 7.62x54R, the cartridge it fires was introduced as "The three line cartridge, model of 1891" with a " line" being an Imperial Russian unit of measure equivalent to 1/10"

    So, given that Mosins produced until at least the early 1920s used Imperial Russian measurements, does anyone know when production was converted to metric measurements?
     
  21. Mauser lover

    Mauser lover Member

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    It probably never went metric, at least as far as screw pitches. The sights might have changed somewhat soon, but probably not much more.
     
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  22. LRDGCO

    LRDGCO Member

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    I suspect that ACE may have an extremely limited stock of screws in Imperial Russian pitches...
     
  23. jmorris

    jmorris Member

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    With something that old, there is no telling what has been done to it but yes it wouldn’t be unheard of for someone to go up to the next size if they stripped out a hole. Lots of gun threads are “special” so it’s not like you would find a helicoil or other thread insert to repair damaged threads and most folks are just not capable of filling the hole with a TIG welder and starting over with “new metal”.
     
    LRDGCO likes this.
  24. Mauser lover

    Mauser lover Member

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    They are awfully close to 1/4 -32 originally. 7.62.net says they are .256-32 screws.
     
  25. 4v50 Gary

    4v50 Gary Moderator Staff Member

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    Try Throne Arms in Trinidad, CO. Throne was my classmate at TSJC. Screwmaking is easy if you have the lathe with the right gear.

    I couldn't make a screw for an antique shotgun because it was some odd ball thread non-standard Belgian made thing. It was neither American-English nor metric. We had no lathes with which that thread could be duplicated and darn if I was going to use a file to make a screw. I made a dummy screw and waxed it in place instead.
     
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