Elevation stud and new rear sight blade:

[AFARR]

Picked up the 625-2 (Model of 1989) today.

It was missing the whole rear sight assembly.

Found the proper length/screw whole replacement.

However the replacement needs a rear elevation stud, and a correct height blade: 0.106.

First question is: Are all the elevation studs the same? Square bottom? The channel has a rounded front on this revolver if that makes a difference.

Second question: The rear blade works fine on the replacement. Do I just need the blade or the whole assembly (windage screw, nut and blade)? Any good links on how to replace it and not lose the detent?

Thanks!

 

[H Richard]

You have to "break" the windage screw in order to remove and replace the sight blade. You need to order a "kit" from S&W which includes the blade windage screw and nut. Be careful removing the screw, as the detente and spring reside inside the head of the screw, ands are teeny tiny and easily lost. Putting the unit inside a clear plastic bag lessens the possibility of loss.

 

[AFARR]

Thought that was the case. I want to order all the parts at the same time.

 

[AFARR]

I'm not seeing (haven't had a chance to call S & W direct) a .106" kit for it on line.

Until the part comes in, could it be filed down (the blade) to roughly the 1/10" of an inch?

At work, so I can't measure it, but it looks like the blade would be .136" (per the seller: N frame 28)...wondering if that .03" is within the adjustment for the sight?

Update: Called S & W. No kit with the blade/screw, etc.

I did order a .106 blade, a 'universal' Screw, Nut, detent spring/detent kit for S & W rear sights, and the Elevation stud.

Just over $30 shipped.

 

[ken158]

You are correct on the .106. As noted, you will need the windage screw, nut and likely a spring and plunger. The windage screw is designed to be broken to be replaced since the nut is attached and the spring and plunger will travel into space if you dont catch them in a plastic bag when you remove the broken screw.

 

[Muley Gil]

If you are very, very careful, you can drill out the screw and re-use it and the nut. It is a lot easier to just break the screw though.

One tip that I use: before you remove the screw from the body of the sight, turn the screw until it is directly under the sight blade. Then ease out the screw, capturing the plunger and spring with you fingers. Do use the plastic bag to perform this operation.