Threads Stripped

[tws3b2]

This is a made in 1951 Remington 550-1 semi auto 22. Bought it a couple years ago. It would jam every other round or so. I found the problem was the sear spring was bent and the hole the sear case screws into was stripped. Seems the previous owner took it apart for cleaning or whatever and he got the case cross threaded trying to put it back. Did a good job bending the spring and stripping the hole threads. Easy to understand because the case is constantly under pressure from the spring even as it is being installed. Easy to cross thread.
Keep in mind this is a Case, not a screw or bolt. It does have two or three fine threads.
I found new springs and case. I put the new case and spring back in and right now it's holding. But, I don't know how long it will hold. I want to find a way to fix before it lets go. The metal there is only about 0.121" thick "only two or three threads". I don't think threaded inserts or push inserts or anything like that will work because of the metal thickness. I don't think jbweld or any thread lock will do much good on two threads.
I'm thinking fill weld the hole then drill and tap Or spot weld the case so it can never move again. There is no reason for it to come out again. I put in several new factory parts and everything else is in great shape. I have no doubt it will last another 80 years as is with a little care. I know nothing about welding.
My question is, Can that be done Or Any other ideas.
This thing is a fantastic shooter and I've decided I'm going all out for a fix. One way or another.

 

[Rocketvapor]

Drill and insert TINY pin?

 

[jplahr]

I think Loctite Retaining compound will work

 

[tws3b2]

Drill and insert TINY pin?

Pin?

I think Loctite Retaining compound will work

I don't think it would work with just 2 threads. It would be nice if it did.

 

[paperpuncher]

You could try the locktite.One of the green high strength varieties might work.Next option would be clean reassemble and judiciously tig the screw in place with a couple small tacks Short of this I think you will need to tig up the hole and remachine it , a lot of work imo Can’t tell from the pic but might be a non standard thread so it may require a special tap

 

[Jonnyofalltrades]

There are lots of quick and dirty methods that could work beautifully, and save your time and money. Loctite bearing retainer and a light peening/centerpunching around the rim of the hole to push metal inward would be my pick.
If you're going to TIG and rethread, why not just machine a new piece with a different, larger thread? It's a very simple part, excepting the short, fine threads. That's what I would do, but I'm the guy that uses his lathe and mill for pretty much everything, so my opinion is suspect.

 

[scasa]

I've got a 550 down at the shop missing the bolt let me know if you need parts I'll see whats there.

 

[scasa]

I've got a 550 down at the shop missing the bolt let me know if you need parts I'll see whats there.

probably not much help the plug is gone ,looks like most guts are gone.

 

[CCM]

Oversize and re-thread the hole, make an oversize case. Since you're willing to go all out.

 

[tws3b2]

probably not much help the plug is gone ,looks like most guts are gone.

Nothing is gone. The gun is in great shape "except for threads" and shooting great right now. Like I said, I'm trying to find a fix before the threads let go.

 

[tws3b2]

There are lots of quick and dirty methods that could work beautifully, and save your time and money. Loctite bearing retainer and a light peening/centerpunching around the rim of the hole to push metal inward would be my pick.
If you're going to TIG and rethread, why not just machine a new piece with a different, larger thread? It's a very simple part, excepting the short, fine threads. That's what I would do, but I'm the guy that uses his lathe and mill for pretty much everything, so my opinion is suspect.

Oversize and re-thread the hole, make an oversize case. Since you're willing to go all out.

Make/machine a new larger/oversize case would be great if I can find someone that can do it. I'll look around and see. Thanks Guys.

 

[scasa]

Nothing is gone. The gun is in great shape "except for threads" and shooting great right now. Like I said, I'm trying to find a fix before the threads let go.

I meant the plug is gone out of the 550 I have as well as the rest of the guts . I was going to send you some parts to help you out

 

[rockhound78]

I would second "jonnyofalltrades" with the bearing retainer loctite and the peening. Probably last longer than you think.

 

[tws3b2]

I meant the plug is gone out of the 550 I have as well as the rest of the guts . I was going to send you some parts to help you out

Oh, ok. I misunderstood. Sorry.
I have extra parts and all parts in the gun now are in great shape. I don't think I will need more.
Thanks for the offer.

 

[tws3b2]

Drill and insert TINY pin?

Actually, After thinking about that I may just give it a try. At least if I screw it up the case is not totally ruined. And, it wouldn't cost an arm and leg. Any Bubba gunsmith should be able to drill that hole in exactly the right place. Even me. Seriously.

 

[tws3b2]

Drill and insert TINY pin?

Whoops, problem. Won't work. The case and spring are the last steps in reassembling. No room to get in there to install the pin. Oh well. One idea leads to another. Thanks

 

[Nick Caprinolo]

How about plumbers tape. Never know till you try and it won't harm what's left of the threads.

 

[Gabe22BR]

So putting a nut on one side I wouldn’t work??
Epoxy, tig, solder it..??
Or make a thread repair from JB weld..


Good luck !!!

 

[Nick Caprinolo]

One other thought. If you value that rifle and want to keep shooting it, take it to a gunsmith, pay the price and be done with it.

 

[linebaugh]

Make/machine a new larger/oversize case would be great if I can find someone that can do it. I'll look around and see. Thanks Guys.

Where are you located? If near me I can cut a new piece for you. Would need to thread your action is all.