What size is letter "O" drill bit?

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Dario

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I am just wondering since I am about to order some Flat Top/American Ballpoint and I might have that size already.

What size metric or english can I use instead?

Why waste money when you can order one more kit instead right? :D[}:)]

Thanks!!!
 
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The "O" bit is a PIA. I find that I have to ream the hole a bit for any of the tubes to fit. BTW, 21/64" leaves a lot of play...too much for my tastes.
 
Originally posted by Geo in Winnipeg
<br />I find the 'O' (.316") bit is too snug as well. I was considering either a 'P' (.323") or a 21/64 (.3281"), 8.2mm = .328". Would the 21/64 be too big if using epoxy?
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I think the 21/64 is too big, the 8.2 mm is much better suited, it is pretty much the same as a "P" bit.

8.0264mm =0.316" ="O"
8.2042mm =0.323" ="P"
8.3344mm = 0.328125" =21/64"
 
Thanks Rudy, since it works for you I think I'll try an 8.2mm bit. What kind do you use, brad point or split point? BTW I use epoxy as well as Titebond poly glue so a perfect fit isn't necessary.
 
Did a little research, guys. 8.1mm = 0.31914 This place has them for $1.67 - $3.86. Bigger than the O, but not as much slop as the others. Since I use epoxy exclusively, I''ll probably give this bit a try. http://www.msdiscount.com/store/columnar.aspx?cat_id=1201&session_id=558677245
 
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