TOTW ROA nipples don't fit

[TFoley]

Leastways, that what a pal of mine here in UK tells me in a sad little email this evening - here it is - no names, to save his face...

Hi tac, I hope you and your family are all well.

I need to pick your brains concerning ROA nipples.
I have just received six nipples from http://www.trackofthewolf.com/List/Item.aspx/64/2/PRA-S. Before I checked them I disposed of all the packing and condensed them into one sealable plastic bag. I then proceeded to check their fit on my ROA.

EEK!, they don't fit. The first sign was the size of the hex bit, the Ruger wrench didn't fit. I found a small socket that fitted only to discover the thread is different.
So, I'm in "**** street" :-(

As you can see the stated thread is 12-28 but I don't know what it is on my ROA.

What seemed a reasonable price was initially squashed by £11.61 import duty and now they are no use to me.

I'm hoping you might be able to help me in some way.

If I have to put this down to experience, then, "such is life".

That's it. With Ruger not making any BP-associated parts for what was probably the most popular modern BP revolver ever made, finding anything that will do the job is a PITA, to put it mildly, especially if you are one of the many thousands of Brits who bought the ROA after their cartridge-firing handgun sports were shot dead right there back in 1997.

I get MY replacements from a well-known BP store in Springfield OR, and these little items, made by Butler Creek/Uncle Mikes of Oregon - DO fit - I have them on my ROA and on a couple of buddies to prove it.

Anybody else had this trouble from TOW?

TIA

tac

 

[Zonie]

As a point of reference, a #12-28UNF-2A male thread should have an outside diameter of .2085-.2150 inches measured from the tips of the threads.

The #12-28UNF-3A male thread outside diameter is .2095-.2160 making it a slightly tighter fit.

The 28 indicates there are 28 threads per inch of length.

The class 2 threads are most commonly used and I don't know which one Ruger used for its nipples.

I mention this because the metric threads have a M5.5-0.9 thread that is close to being the same.

It has an outside diameter of .217 with 28.22 threads per inch and is an attempt to create a metric version of a #12-28 thread.

Because it is not exactly the same, it could cause an interference with the threaded hole.

A possible solution would be to buy a #12-28-2A die and drive the unknown nipple into it.
This would remove any excess material on the metric thread and should allow the nipple to be used in the Ruger.

 

[Patocazador]

I bought 6 nipples from TOTW for my stainless ROA and they fit fine. That was about a year ago.

 

[rodwha]

I've also replaced mine with those and they work great. This was maybe 2 years ago.

Blomquist also makes the hex head style of nipples, and he also makes them for repros too (hex head). I assume the same wrench will turn them all.

 

[TFoley]

I've also replaced mine with those and they work great. This was maybe 2 years ago.

Blomquist also makes the hex head style of nipples, and he also makes them for repros too (hex head). I assume the same wrench will turn them all.

Thanks, guys, for the advisories. The Butler Creek/Uncle Mikes also fit perfectly, and are whole lot cheaper than those from TOTW, but I assure you that the ones my pal has from them most certainly do NOT fit.

Maybe a packaging mistake by the guys over at TOTW - these things DO happen in the best regulated organisations.

Best to all and thanks again. :thumbsup:

tac