Drill Bit Size Table

TC9Ball

TC9Ball

AzB Silver Member
Silver Member
not trying to reinvent the wheel but.... does anyone have a chart for Drill Bit Size, for example does 3/8 radial, 3/8-10, 3/8-11 all use a 5/16 drill bit?
asking for a friend! lol
 
TC9Ball said:
not trying to reinvent the wheel but.... does anyone have a chart for Drill Bit Size, for example does 3/8 radial, 3/8-10, 3/8-11 all use a 5/16 drill bit?
asking for a friend! lol
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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 said:
Yay, cuemakers! Attempting to undo 185 years of thread standardization for absolutely no good reason!
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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.
 
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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.
 
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chuckpilegis said:
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
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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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Here you go on standard taps.
¼-20 13/64

5/16-14 1/4

5/16-18 17/64

or use F

3/8-10 5/16

or use N

3/8-16 5/16

7/16-14 23/64

or use U

7/16-20 25/64

or use W

1/2-13 27/64

1/2-20 29/64

9/16-12 31/64

9/16-18 33/63

5/8-11 17/32

5/8-18 37/64

3/4-10 21/32

3/4-16 11/16

7/8-14 13/16
 
Kim Bye said:
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 reffrenv
Click to expand...
 
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Just wondering if you are drilling into wood. It probably moves depending on how humid it is. Not like it is metal where it remains the same
 
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