3/8-10 & 3/8-11

Zud

Zud

Old Dog Trying to Learn
Silver Member
OK, I do feel a bit stupid but I had several McDermotts with the 3/8-10 pin and picked up an OB-1 to use with them.

Soon after I had the chance to buy a used custom shooter and break jump from a local cue maker and picked them up. I looked at the pin and it appeared similar to my McD's so I grabbed some 3/8-10 joint caps and I tried them on the shooter and they worked fine. When I tried another set on the Jump/Break they didn't fit. I just went without and saved wondering why they didn't fit for another day.

I then tried my OB-1 on the shooter and it also screwed right on. I was pleased that it felt snug going on figuring that it fit well. I have used the OB-1 exclusively on it for the last few months.

Recently I purchased another set of caps for the break/jump and the shaft protector screwed in fine but the butt protector again would not fit. I asked a buddy of mine (also deals cues) and he immediately told me that that wasn't a 3/8-10 pin The threads are not as deep and he figures its a 3/8-11 pin.

So now I'm feelin a bit stupid and wondering if I have fubared the threads in my OB-1 shaft.

Good part of the story is that I have gone to the original shaft on my stick and I am shooting better than I have with the OB.

Thanks for listening
 
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What the difference is, is number of threads per inch. a 3/8-10 has 10 threads per inch while a 3/8-11 has 11 threads per inch. They both have a diameter of 3/8".

Brian
 
Yes

I know the difference is threads per inch, the pins appeared similar. I now know the threads on the 3/8 10 look a bit deeper on the pin (might be an illusion)
 
Zud said:
I know the difference is threads per inch, the pins appeared similar. I now know the threads on the 3/8 10 look a bit deeper on the pin (might be an illusion)
Click to expand...

Sometimes....

mod_pin.jpg


(image care of www.dzcues.com) <---awesome resource, check it out!
 
It could also be radial. Like the one in the picture. If so, then there is no size. It's just called radial.
 

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Another picture of a radial pin.
 

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The first pic is a uni-loc Radial, made by the same company that made the quick release uni-loc joint on most predators and lucasi cues. The second picture is not a true radial, I call it the knock off radial, or known as 3/8x8 radial, it is used on some imported cues. The shafts for Uni-Loc Radial and 3/8x8 radial are not interchangeable.
 
Impact Blue said:
Sometimes....

mod_pin.jpg


(image care of www.dzcues.com) <---awesome resource, check it out!
Click to expand...

Wow, This is some great information, I had no idea there were the 2 3/8-10 pins. My McDermott pins look like the one on the left. My Brian King cue pins look like the one on the right (I had assumed it was 3/8-11) so they both could be the same thread.

The good news could be that I didnt fubar my OB-1 shaft

The bad news is none of my caps fit the modified 3/8-10 pin if that is what it actually is.

I have a couple radial cues also (my Sly and Diveney) but no caps for either...yet
 
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