Nipple thread sizes

[Pancho]

Help me fresh up my memory and I promise I'll write it down this time. I know that TC sidelocks use 1/4-28 nipple thread. I can't remember what Uberti,Piettia,Euroarms, and Pedersoli use. The Italians can't agree on anything so I'd be surprised if they used the same metric thread and diameter.

 

[GENTLEMAN OF THE CHARCOAL]

PIETTA 1858 New Model Army .44 caliber=6x.75..(mm)....

UBERTI 1858 Cattleman's Carbine .44 caliber=12x28..(mm)....
UBERTI 1847 Walker .44 caliber= Thread size not definitely known to me at this time....
UBERTI 1849 Colt Pocket .31 caliber=6x.75..(mm)....

***UBERTI 1847 Walker .44 caliber=6x.9..(mm)....

 

[mykeal]

Interesting.
GotC, your Uberti Walker and mine appear to have different nipples. However, I think the spec is just misstated.

Six mm is 0.236 inches, just .014 less than 1/4 inch. And I don't believe there is a metric standard M6x0.9 thread spec; the pitch for 6mm major thread diameter is either 1mm or 0.75mm. A 0.9mm pitch is almost exactly 28 tpi, so your 6x0.9mm is probably really 1/4x28.

• Uberti 1861 Colt Navy - 12x28
• Uberti Colt 2nd Dragoon - 1/4x28
• Uberti Colt Cattleman - 12x28
• Uberti Colt Walker - 1/4x28
• Pietta 1860 Colt Army - M6x0.75
• Pietta Starr SA - M6x0.75
• Pietta 1851 Colt Navy - M6x0.75
• Pietta 1858 Remington New Navy - M6x0.75
• Ruger Old Army - 12x28
• Euroarms Rogers & Spencer - M6x0.75
• Euroarms 1860 Colt Army - M6x0.75
• Armi San Marco Colt Walker - 1/4x28

 

[armedandsafe]

Where is the best (cheapest) place to get the 6x0.75 nipples? I've found them for $2++ each, but that seems a bit expensive, to me.

For an exercise in irony, the local shop sells rifles using the 6x0.75 nipples, but their central supplier guy won't let them stock the nipples. Supply guy says he has never sold any, so he has never stocked them. How's that for circular logic?

Pops

 

[mykeal]

Measurement Results

Big surprise here - not the results I expected.

I measured inside diameter at the lip and overall length (height?) of each of 20 CCI No. 10, CCI No. 11 and Remington No. 11 percussion caps. I couldn't find my Remington No. 10 caps.

The CCI No. 10's averaged 0.158 in diameter and 0.162 in height; the spread was between 0.157 and 0.158 in diameter, and the heights were all 0.162.

The CCI No. 11's averaged 0.162 in diameter and 0.162 in height; the spread was between 0.162 and 0.163 in diameter and again, the heights were all 0.162.

The Remington No. 11's averaged 0.162 in diameter and 0.147 in height; the spread was between 0.162 and 0.164 in diameter and between 0.145 and 0.149 in height.

So, the CCI and Remington No. 11 caps are the same diameter on average, although the variance in size is greater for the Remingtons. That is a surprise, as I had the impression from range reports that the Remingtons were a bit smaller in diameter; they seem to fit where CCI No. 11's were too large and CCI No. 10's were too small.

The difference in height may explain why the Remingtons seem to fit better on the in-between size nipples. They may seat on the nipple sooner than the taller CCI's and thus appear to fit better.

OOPS! I intended to post this on the Cap Sizes thread. I'll copy it over there...

 

[Pancho]

I knew the Italians couldn't agree with each other but I didn't know they couldn't agree with themselves.

 

[GENTLEMAN OF THE CHARCOAL]

Mr. MyKeal, may well be mis-stated--however not by me. I double-checked.
Measurements came out of DGW catalog.
I called them to re-affirm.
Jamey wasn't there. Spoke to a woman.
She looked it up and reaffirmed <6x.9>.
She told me 6x.9 first before she knew I already had the same thing....

 

[GENTLEMAN OF THE CHARCOAL]

Mr. MyKeal, just called Cabela's.
Spoke to product specialist.
He reaffirmed your <1/4x.28 >.
Must be a mis -print in DGW's catalog, because I heard the woman turning pages while she was looking it up so she must have been in the catalog also.
Surprised Walker and Uberti Remington .44 Cattleman's Carbine nipples are not the same, although Carbine call's for #10 and the Walker for #11....
I'vd got good supplies of nipples and extra cylinders for each piece of my equipment but I don't know all the thread sizes by heart. Plus I'vd got manuals in the cabinet on them and the manuals that came with them in my big mountain pack but I'm not digging through all of that s*** when I'vd got a telephone....
Should have called Cabela's to start with this morning. Well, actually I did call them first but they were so busy they had me on hold and it pissed me off so I hung up on them. I'vd got DGW catalogs all over the damn place here so I dug through one of them.
Sorry about the mis-information....

 

[mykeal]

M6x0.9 is not a true metric thread spec, but it IS the metric equivalent of 1/4x28. If all you had was a metric thread gauge, that's what you would come up with if you measured a 1/4x28 thread. You just wouldn't be able to go to a store and buy that thread on a bolt or nut because it doesn't officially exist.

 

[GENTLEMAN OF THE CHARCOAL]

MyKeal, thank you for the information. I wrote it down, printed 2 copies and laminated all 3 copies.
One copy to my day pack, one copy to my Walker pack, and one copy to my mountain pack....