bolt set screw stripped?

[jonny1o1]

the set screw in my bolt is stripped, any way to fix this?

[ribbonstone]

If the screw is stripped, a new (or substitute of the same thread) would fix it.
If the threaded hole in the bolt is stripped, then would need to drill/tap to the next size up and get a screw to match.

Or get new parts and start over. Problem with this is that Archer doesn't seel just the bolt....sells the whole recieiver/bolt kit.

For the time being, could wrap the set screw with teflon tape and insert it...just don't crank down on it too hard.

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It's expensive, but the PURPLE lock tite has been working for me.  Stuff is made to keep screws put but still allow for removal (it's the stuff Crosman uses on it's set screws....seems to work fine).  Would have to order it (gunsmith supply) as no one seems to carry it.

[jonny1o1]

the head of the set screw is stripped, the allen key just spins in it

[ribbonstone]

...you have a large, GOOD, hardware store near by that can find a screw of the same thread (can be a little longer, but has to have a head that fits inside the hollow section of the bolt), then I'd lhave to order a reseal kit from Archer:
http://www.archerairguns.com/QB78-Seal-Kit-p/aaqb78sealkit.htm

Could go to your local HomeDepot/Lowes, with the bolt in your hand, and ask for a screw that would fit...might find a clerk who knows his arse from a hole in the ground and get one.

Archer's kit has a lot more than you need right now...but having spare seals ready to go isn't a bad idea.

Might also order a valve stem from Best Airguns (look under accesories).  Archer has complete valves, not the separate valve stems (unless you ddi some grinding/porting on the valve, you're unlikey to need a new valve body, so get a spare stem).

[CharlieDaTuna]

Get a 1/4 inch long #10-32 set screw. It's a perfect fit and what I use in the kits I sell. It can also be used for the barrel set screw.

[jonny1o1]

the new screw will be gotten, but first it has to come out of the bolt

also, what are the thread sizes on most screws?

Just a spot of Loctite Liquid Metal on the tip of the key and left to set will sort it OR, drill it out very carefully but I would try the former first;  it always works for me.  Just leave it long enough to cure (not just set) to a satisfactory hardness; a couple of days if need be.  I've cut threads in this stuff.

[jonny1o1]

would the epoxy that comes in two little siringe tubes work?

jonny1o1 - 8/17/2008  7:37 PM

would the epoxy that comes in two little siringe tubes work?

It's much the same as my suggestion and indeed,  before I discovered liquid metal, I used to use it for various tasks such as this.  However I find it a litle more 'runny' than Liquid Metal (more chance of contamination) and not as quick or hard setting.

[howie1a]

What I've done in the past with this type problem is either check if a regulator sea  or metric would work better or take a small flat blade screwdriver and grind down the sides so I could drive it in the hex across the sides to take the screw out or possible grind down a allen wrench to fit better afrer all you are going to get a new screw for the rifle when you get this one out . howie

[jonny1o1]

actually i think ill use some super glue just a dab,  and yea i tried the other allen keys

[DanoInTx]

....or any screw extractor, they sell 'em at Ace Hardware and such.  It's like a screw with a reverse thread.  I still have the bolt screw from my QB78 stuck on my EZ-Out, haha, I had the same issue as you:)

[Jaymo]

I've used super glue for all sorts of things at home and at work. I bought a Dixie Gunworks Tennessee Mountain Rifle flintlock last year. It has a tallow hole in the RH side of the butt. Someone had discovered that pennies were a nice, tight fit in that hole(before I bought it). I couldn't think of any way to remove them without risking damaging the stock. Drilling was out because I didn't know how deep the hole was. Plus, it would ruin those pennies. Finally, I put a drop of super glue on the back(flat) end of a 3/8" drill bit and pressed it against the center of the penny. I then rocked it side to side, after it cured, and worked the penny out. I repeated this 7 more times and now I have a perfect tallow hole filled with my homemade patch lube.