Disco Breech Screw Issue

[Ken0]

Hello GTA members. I need some advice as I ran into a problem adding a new bolt and bolt handle to my .22 discovery.

I removed the breech screw in order to lift the breech up and slide the old bolt over the hammer pin and out through breech plug.

I realized i forgot to align the striker pin correctly after tightening the breech screw back down, so i needed to removed the breech screw once again, and as I started to remove the breech screw for a second time I accidentally stripped the screw. It used a 1/32nd allen head (I think).

Now I cannot get the breech screw back out because it is stripped. I am in a big problem and don't know what to do to be able to get this breech screw out again.

Thanks for the advice in advance.

So pretty much I'm asking how you guys would go about removing a stripped inner breech screw in a disco? I want to be very careful.
Dillon

[KnifeMaker]

dillon;

I assume that you have stripped the allen head part of the screw, not the threads? If so, read on.

Many of us have had the same issue. First, and foremost, always clamp the breach down tight before removing or replacing the screw.
 I use mini vice grip clamps for this.

to remove the screw, I sharpened a jewelers screwdriver to a nice true taper and flat point, that was slightly larger than the opening,  and place the driver over the allen slot. I then give the screwdriver a good stiff tap to set it into the slot. 

Now with firm downward pressure on the screwdriver, back out the screw.

After a while, the slot from the driver will get too large. Simply step up to the next larger size in teh screwdriver set.

When replacing the screw, again, use a good clamp, and use the same firm pressure to tighten the screw.

A machinist trick to not strip the screw hole, is to turn the screw with the driver Counterclockwise, until you feel a click. this is the screw finding the threading, and will prevent cross threading.

Now simply tighten as normal. Do Not Over Tighten. The clamp takes care of the proper depth. 

This will allow many removals before needing to replace the screw. Never hurts to order a spare for the future!

Knife

[Ken0]

dillon;

I assume that you have strupped the allen head part of the screw, not the threads? If so, read on.

Many of us have had the same issue. First, and foremost, always clamp the breach down tight before removing or replacing the screw.
 I use mini vice grip clamps for this.

to remove the screw, I sharpened a jewelers screwdriver to a nice true taper and flat point, that was slightly larger than the opening,  and place the driver over the allen slot. I then give the screwdriver a good stiff tap to set it into the slot. 

Now with firm downward pressure on the screwdriver, back out the screw.

After a while, the slot from the driver will get too large. Simply step up to the next larger size in teh screwdriver set.

When replacing the screw, again, use a good clamp, and use the same firm pressure to tighten the screw.

A machinist trick to not strip the screw hole, is to turn the screw with the driver Counterclockwise, until you feel a click. this is the screw finding the threading, and will prevent cross threading.

Now simply tighten as normal. Do Not Over Tighten. The clamp takes care of the proper depth. 

This will allow many removals before needing to replace the screw. Never hurts to order a spare for the future!

Knife

This was exactly the advice I was looking for! Thank you so much. I am going to give this a shot right now.

[KnifeMaker]

  come back and let me know how it went!

Knife

[Back_Roads]

 I also replaced the allen head screws with after market torx ones forget where I got them at the moment, I'll go through my records tonight and get back to you if no one else refreshes my memory for me .

[10gaOkie]

I replaced mine with custom high tensile strength, torx head, breech screws. They are listed on ebay for $8. for the pair.

Chris

[oldpro]

I replaced mine with custom high tensile strength, torx head, breech screws. They are listed on ebay for $8. for the pair.

Chris

You have a link to ebay for screws?

[Bentong]

Alejandro sells this at ebay and got several from him when he was still active in the forum > http://www.ebay.com/itm/SS-Slotted-Breech-Screw-for-a-crosman-2240-2250-137-wbr-7-1322-2300-pc-wbr-77-22xx-13xx-/221888318704?&_trksid=p2056016.m2518.l4276

Magnum air sells this from his website and ebay > http://onlinestore.magnumairpower.com/products/custom-breech-screw

[Tater]

You have a link to ebay for screws?

I just mailed a screw out to you today Travis.

[oldpro]

You have a link to ebay for screws?

I just mailed a screw out to you today Travis.

Thanks Jerry I just got yours apart and need those upgraded screws.

[Tater]

You have a link to ebay for screws?

I just mailed a screw out to you today Travis.

Thanks Jerry I just got yours apart and need those upgraded screws.

I sent one of the tiny screws that go under the bolt. Are there other ones needed? The back breech screw is still fine.
Sorry I didn't think of mailing it sooner.

[KnifeMaker]

Thank's for the Links!!!

Knife

[Ken0]

Just ordered a new torx drive breech screw from magnum airpower (Thank you again, Bill).

Now I just need to get the old screw out. Going to try to carefully hammer a phillips head into the screw and try to get it to catch to remove it.

If anyone has a better technique to remove a stripped screw head, please let me know.

Once again, thank you for the responses! I don't know what I would do without this forum. 

[Big Bore Bart]

  Tap a small Torx bit in instead of the Phillips.    Tapping while turning will help break it loose.

[TimmyMac1]

Just ordered a new torx drive breech screw from magnum airpower (Thank you again, Bill).

Now I just need to get the old screw out. Going to try to carefully hammer a phillips head into the screw and try to get it to catch to remove it.

If anyone has a better technique to remove a stripped screw head, please let me know.

Once again, thank you for the responses! I don't know what I would do without this forum. 

When a breech screw won't turn out I drill the head off with a 1/8" bit. What will be remaining is enough threads to grab with a needle nose so you can unscrew after the parts are separated.
TimmyMac1