Davis trigger adjustment screw???

[Brian Jordan]

Can anyone confirm for me that the small adjustment screw between the triggers is a 4-48 thread? I lost one in the black hole of my shop floor

[Gaeckle]

That doesn't sound like the size, but I know the Log Cabin has plenty of them. I also have for or five in my parts bin. If you need to I can send you one.

[Gaeckle]

The screw size is 3-48 I believe

[Brian Jordan]

I appreciate the offer Gaeckle! That's very kind, but I ordered a few so I have them on hand.

[Bob Roller]

Why should it get lost to begin with?? If it's a #4 then it should be .108-.110.I used a 4x40 for almost all triggers I made and that was more than a few.
Bob Roller

[Scota4570]

I never understood why the use of odd ball screws was the rule in MLs.  Ordinary common SAE screws would do the job just the same.  At least go with a common "gun" size like 6-48.  Any decent gun shop has a box of those.  On a set trigger engagement stop screw could easily be a 4-40 or 2-56. 

[P.W.Berkuta]

 Gaeckle is correct - "The screw size is 3-48 I believe". In the triggers that I have lost this screw I tried a #2 and that was too loose, and I tried a #4 and that was too big. I ordered a #3 and that was just right - "The Goldilocks Screw".

[Gaeckle]

I'm glad you solved your issue.

When students taking the gun building classes at the Log Cabin start taking apart items like locks and mechanical triggers we suggest that all small parts go into some sort of container. I find that parts from a lock will fit nicely into an Altoids tin. For something like the lock fly I use a small plastic bag (the kind that the Cabin uses for small stuff like screws and what have you) to hold the fly. All the parts go into the tin, the tin gets labeled and parts loss is pretty much nil. Sometimes students won't head this advice and stubbornly exclaim that they'll be careful and not misplace anything. Sure enough, somewhere along the line there's a " Oh darn....the fly is missing" to which everything comes to a halt and we now have mostly older gents on their hands and knees vigorously searching the floor. The missing part is found and then starts the tedious effort to get off our knees. Then it's time for some rest and a coffee break.

Get yourself an Altoid tin or two

[Steeltrap]

I appreciate the offer Gaeckle! That's very kind, but I ordered a few so I have them on hand.

Not your first rodeo.....eh?   

[whetrock]

I'm glad you solved your issue.

When students taking the gun building classes at the Log Cabin start taking apart items like locks and mechanical triggers we suggest that all small parts go into some sort of container. I find that parts from a lock will fit nicely into an Altoids tin. For something like the lock fly I use a small plastic bag (the kind that the Cabin uses for small stuff like screws and what have you) to hold the fly. All the parts go into the tin, the tin gets labeled and parts loss is pretty much nil. Sometimes students won't head this advice and stubbornly exclaim that they'll be careful and not misplace anything. Sure enough, somewhere along the line there's a " Oh darn....the fly is missing" to which everything comes to a halt and we now have mostly older gents on their hands and knees vigorously searching the floor. The missing part is found and then starts the tedious effort to get off our knees. Then it's time for some rest and a coffee break.

Get yourself an Altoid tin or two

Or get some of those rubber mats for the shop floor. I hear they make searching a lot easier on the knees!   

[smart dog]

Hi,
I am glad you resolved your problem but I am going to recommend a modification. I don't know how you are equipped to drill steel, tap holes, cut threads, or fabricate small metal things. Assuming you can do those basic things, I recommend drilling the hole in the plate for a 4-48 screw and making a 4-48 adjustment screw to replace the  smaller old one.  That will strengthen the set screw mechanism quite a bit.

dave

[Dale Halterman]

When students taking the gun building classes at the Log Cabin start taking apart items like locks and mechanical triggers we suggest that all small parts go into some sort of container.

For us old guys who are on various medications the empty pill bottles are ideal. The caps don't come off even if you drop the whole thing on the floor. If you need to label the part, just write the description on a scrap of paper and put it inside with the part.
 

Sometimes students won't head this advice and stubbornly exclaim that they'll be careful and not misplace anything. Sure enough, somewhere along the line there's a " Oh darn....the fly is missing" to which everything comes to a halt and we now have mostly older gents on their hands and knees vigorously searching the floor.

I keep a large magnet on my workbench for just such occasions. The one I use now came from a model T Ford magneto. Not only do I usually find what I am looking for, I generally find a other few things I didn't know I had lost.

Dale H

[Eric Krewson]

I bought a Davis trigger that the adjustment screw was cross threaded from the factory and was very loose. I checked with Track, they wanted $1.99 for one screw, shipping would make that one screw cost $7. I could buy 100 3-48 screws from a supply house for $4 but I didn't need 100 of them.

I called Davis and told them the problem, they promptly sent me 6 of them for free.

[P.W.Berkuta]

Both the 3-48 and the 4-48 TPI screws are "fiddly little buggers" and can get lost very easily so it does not matter what one you use. I'd just get the screw that came with the trigger and K.I.S.S.

[Brian Jordan]

I did order a box of 100 screws since it was the cheapest route to take, so if anyone needs any just ask.

[smylee grouch]

I use a piece of that refrigerator magnet in the bottom of an empty round ball box.

[Darkhorse]

When I disassemble locks and such I do it over a thick, clean white towel. Small parts that fall on it won't bounce near as far and the deep nap helps hold it in place.

[P.W.Berkuta]

Just the other day I was working on putting knife handle scales on a 7" bowie and I dropped a 6-32 Lovelss bolt that I was trimming to length on the belt grinder. It was all brass so a magnet would not work on finding it. It took me 2 + hours to find it - I hate when this kind of stuff happens

[Bob Roller]

Hi,
I am glad you resolved your problem but I am going to recommend a modification. I don't know how you are equipped to drill steel, tap holes, cut threads, or fabricate small metal things. Assuming you can do those basic things, I recommend drilling the hole in the plate for a 4-48 screw and making a 4-48 adjustment screw to replace the  smaller old one.  That will strengthen the set screw mechanism quite a bit.

dave

Redrill with a #44 drill, countersink it the depth of ONE thread and tap it to 4x40 or 4x48.  3 minute job.
Bob Roller

[P.W.Berkuta]

Buy the correct screw - ZERO-minute job