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Centerfire Rifles - Manually Operated Lever action, bolt action or other non gas operated centerfire rifles.

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  #1  
Old 12-15-2022, 5:43 PM
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Default Help Identify Missing Screw- Marlin 1894

Unsure of how this happened, rifle has been kept in a scabbard in a safe for a few years without being used. Regardless, I pulled it out to use it last weekend and see a missing screw. I'm sure the proper replacement can be found on Numrich, but I'm uncertain of which screw.

Carrier screw? Any help in identification would be great, and any tricks to install it? Or will it be straightforward?
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File Type: jpg missing screw- marlin.jpg (50.2 KB, 128 views)
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  #2  
Old 12-15-2022, 6:45 PM
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Go to Numrich they have a schematic and they may have the screw.

https://www.gunpartscorp.com/gun-man...94-series/1894

LOL I should have read the whole post.
Just by going with the schematic it does look like the carrier screw. But not sure how that could come loose as it looks to have tension on it.
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Last edited by jtv3062; 12-15-2022 at 6:51 PM..
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  #3  
Old 12-15-2022, 10:11 PM
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Installation is very straightforward, no trick to it at all.
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Old 12-16-2022, 6:25 AM
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Good reminder for everyone,,,,check your screws periodically.
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  #5  
Old 12-16-2022, 7:17 AM
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Take a very careful look around the floor area where the rifle is stored, and use a strong magnet to check the creases inside the case. Where did you first notice that it is missing? Look around that area also. A strong magnet will pick up all kinds of stuff you can’t even see, you will be surprised at how much stuff you find.
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Old 12-16-2022, 7:22 AM
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2nd the recommendation for Numrich.

How are you preventing rust when rifle is stored in a scabbard for long periods?
the missing screw is concerning, but I'd also be cautious about rust and corrosion during storage like that?
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  #7  
Old 12-16-2022, 8:09 AM
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Numrich has repos for $8
Midwest has OEM for $7
https://www.midwestgunworks.com/marl...er-screws.html
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  #8  
Old 12-16-2022, 9:13 AM
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I was trying to avoid unnecessary details. This rifle is a friend's. Lord knows where the screw is. Rust hasn't seemed to be an issue, it's pretty dry here.

I ordered the screw suggested, it fits and begins to thread for a moment and then gets stuck. Would the Era of production affect screw diameter?
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Old 12-16-2022, 11:02 AM
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Quote:
Originally Posted by bballwizard05 View Post
I was trying to avoid unnecessary details. This rifle is a friend's. Lord knows where the screw is. Rust hasn't seemed to be an issue, it's pretty dry here.

I ordered the screw suggested, it fits and begins to thread for a moment and then gets stuck. Would the Era of production affect screw diameter?

The rifle was broken up into two categories for parts ordering. Old style, and new. Now there are Ruger Marlins. Don't know the dates or changes reflected in this. Your picture is of a later gun with cross bolt safety. The MGW part is for that series. Possibly the thread pitches and sizes were changed. Does it thread in easily on the far side? Crud/crap in the threads? Numrich part buggered?
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Old 12-16-2022, 2:04 PM
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Good questions Kendog, I'll do a deeper inspection this weekend inspecting threads in the receiver, as well as whether or not it will thread the other way. I'm pretty sure I confirmed part #, but will double check again.
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Old 12-18-2022, 5:44 PM
hambam105 hambam105 is offline
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Let's take a look....yeah-yeah, wait a sec, yeah-yeah, no doubt. A screw is definitely missing.
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  #12  
Old 12-18-2022, 7:52 PM
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are you doing this with the bolt closed? might be easier with no tension on the carrier.
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  #13  
Old 01-09-2023, 4:44 PM
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Welp, the update here is that I have ordered both the carrier screw for the new model, and the carrier screw for the old model. Neither thread, starting to think there is an issue with the threads in the receiver. Frustrating, apparently this was in at a gunsmith to have a site fixed, unlikely they caused the issue obviously, but it hasn't been out or used since. That was 4 years and 1 state ago.
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  #14  
Old 01-09-2023, 5:20 PM
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I believe it is a 12-28.
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  #15  
Old 01-09-2023, 5:46 PM
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Quote:
Originally Posted by kendog4570 View Post
I believe it is a 12-28.



Never mind what I said.
Did a little digging and it is a .157-40 NF2. Scary close to 8-40, approx .003" under.
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  #16  
Old 01-16-2023, 3:04 PM
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That explains why my 8-40 alllllllmost seems to work. Interesting.
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  #17  
Old 01-21-2023, 8:54 AM
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The screw sold by Numrich is 8-40, and does not work. By stroke of luck my friend found the screw sitting in a random drawer in garage. Now I'm determined to confirm it's thread pitch. What would be the best way to test if it is .157-40? Can't seem to find any support for that threading at local hardware shops
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  #18  
Old 01-30-2023, 11:27 AM
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Pitch gauge would be good. Otherwise put a caliper on it to measure diameter, then measure as many thread pitches as you can and divide by the spaces. inverse gets you threads per inch. Magnification helps a lot. Also you can use other screws as your pitch gauge, like a 4-40 screw of course.
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