RADIAL PIN vs. 3/8-10 PIN

[Renegade_56]

the radial pin and the 3/8x10 pin are part of the big pin family in my opinion along with other like the southwest pin . the way to read a thread by the numbers and see if it will fit goes as follows

example

3/8x10

3/8 is the pitch of the thread , the inclination.

x10 - how many threads are per inch. if you would take a 3/8x10 pin and cut exactly a inch you would have approximate 10 rotations or the thread.

as you can see from the picture about the 3/8x10 has a little more threads per inch then the radial pin which is approx 3/8x8. The pitch is the same but the number of threads is less.

other common threads are

5/16x18

5/16x14

southwest - 3/8x11 - same pitch more threads per inch.



so technically the pitch matches between the radial pin and the 3/8x10 pin the the number of rotations does not. if you try to screw it on and force it , eventually it will screw in but you will destroy the wood threads.


personally i love the radial pin - easy to install accurate as a cue maker and as a player i love that i have even more flat contact with the wood. my personal favorite.

um, not so

 

[whammo57]

why do you need a radial pin........... it's just another bastard thread............ look at all the problems you are having already........... pick something more common.........

it has no effect on how the balls go in the pocket


Kim

 

[RBC]

will a radial OB , 314-2 or SS360 fit on these butts ?

RSCA

Here's the best thing you can do.

1. Get a decent caliper to measure with. A ruler or tape measure just isn't accurate enough.
2. Measure the distance from the tip of one of the threads near the joint face to the tip of another thread near the end of the screw. Make it the furthest apart that you can if possible. Make sure to be reasonably accurate with your measurements.
3. Count the number of threads between the 2 measuring points. Count the thread tip that you start at as zero, and count all the way to and including the last thread tip that you measured by.
4. If you're length measurements are metric, then convert them to english to at least 3 decimal places.
5. Divide the length by the number of threads to get the "Pitch" or distance from one thread to the next. The reason to measure as long a section of the screw as you can is to get a more accurate average of the single thread length.
6.Now, divide the single thread length into 1 to get the threads per inch. You'll know you have it right if it comes out to either 8, or around 7.6 or so. If you don't get either of those numbers, then go back over your measurements and math.

The 8 threads per inch screw will have single thread length of .125".
The Radial will have a single thread length of .131".

All the OB shafts made to fit the Radial pin will only fit the Radial pin.

We do have the ability to make shafts to fit the "other" pin, but don't build them as a standard. I know that the other makers are in the same boat as far as the "Radial" shafts that they make. But I'm not sure whether or not they offer anything for the other pin.


Royce

 

[RSCA HOOLIGAN]

RSCA

Here's the best thing you can do.

1. Get a decent caliper to measure with. A ruler or tape measure just isn't accurate enough.
2. Measure the distance from the tip of one of the threads near the joint face to the tip of another thread near the end of the screw. Make it the furthest apart that you can if possible. Make sure to be reasonably accurate with your measurements.
3. Count the number of threads between the 2 measuring points. Count the thread tip that you start at as zero, and count all the way to and including the last thread tip that you measured by.
4. If you're length measurements are metric, then convert them to english to at least 3 decimal places.
5. Divide the length by the number of threads to get the "Pitch" or distance from one thread to the next. The reason to measure as long a section of the screw as you can is to get a more accurate average of the single thread length.
6.Now, divide the single thread length into 1 to get the threads per inch. You'll know you have it right if it comes out to either 8, or around 7.6 or so. If you don't get either of those numbers, then go back over your measurements and math.

The 8 threads per inch screw will have single thread length of .125".
The Radial will have a single thread length of .131".

All the OB shafts made to fit the Radial pin will only fit the Radial pin.

We do have the ability to make shafts to fit the "other" pin, but don't build them as a standard. I know that the other makers are in the same boat as far as the "Radial" shafts that they make. But I'm not sure whether or not they offer anything for the other pin.


Royce

the cues are still in the Philippines and if i have to explain this to the cuemaker there !!!
My friend is scared to pay the remaining money and found out when he eventually gets his cues that his OB shaft doesn't fit . what to do then ?