Drill Bit Size Table
- Thread starter TC9Ball
- Start date
With the exception of the radial, which use a 5/16 and also a 5/16 reamer is recommended.
The other 2 depends on who made the screws.
DeeDeeCues
Well-known member
Yay, cuemakers! Attempting to undo 185 years of thread standardization for absolutely no good reason!
If they made the right size hand taps from the get go, maybe people would have had the screws made the same.
The biggest reason that I know of was,
Different size screws were being made to accommodate the taps offered.
Just saying!
I had my taps made special seeing I was one of the one's who complained about it 30 years ago.
If you google: Tap drill chart, you'll get a big list of all common fine and coarse threads (UNF & UNC) but many of the threads commonly used in pool cues aren't standard threads.
As for Radial, you can download the technical specs from the Uni-loc website, obviously you'll find the specs for Uni-Loc pin as well.
As for Radial, you can download the technical specs from the Uni-loc website, obviously you'll find the specs for Uni-Loc pin as well.
I stumbled on a chart here : https://prathercue.com/products/t8-tap-3-8-ball-x-4-standard
3/8-10 is not .312" and 5/16-14 is usually better with a letter F drill, so .257"
I only copied the chart for TC9Ball Its from Prather so I would go to their website and straighten them out. I heard they make cues also
That might be true, but it's still wrong
If you do .312" for a regular 3/8-10 pin, like a McDermott, that's gonna be a very loose fit indeed. For a 3/8-10 Modified pin, it's only 4 thou off, but still the point of that pin is to live thread shafts with an accurate minor, so you get a perfect fit.
All that being said, why not spend a day in the shop, take a few shaft blanks that didn't meet expectations, cut them into 2" and 3" pieces and play around with the minor and tap H grade and see what you think works best, when you are happy, write the specs on the side of the piece and save it for future reffrence.
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