flat bottom 3/8-10 tap

?? Not busting your balls but, If you don't have a lathe what are you doing that would require needing a tap? Are you trying to make an existing shaft threads deeper?
 
?? Not busting your balls but, If you don't have a lathe what are you doing that would require needing a tap? Are you trying to make an existing shaft threads deeper?

we all gotta start somewhere right........lol

i'm kidding. it's for a local cue maker.
 
I am not sure if your cuemaker wants a flat bottom thread pitch or a bottoming tap. I have not seen flat bottom thread pitch taps. I am not sure what you would need it ground that way for. The hole you drilled already provides the flat bottom. He only needs a regular 3/8-10 tap to install the 3/8-10 flat minor diameter pins or to make shafts for one. If he needs a bottoming tap just grind the end of a 3/8-10 plug style tap to get rid of the plug style tapered lead in.
 
I am not sure if your cuemaker wants a flat bottom thread pitch or a bottoming tap. I have not seen flat bottom thread pitch taps. I am not sure what you would need it ground that way for. The hole you drilled already provides the flat bottom. He only needs a regular 3/8-10 tap to install the 3/8-10 flat minor diameter pins or to make shafts for one. If he needs a bottoming tap just grind the end of a 3/8-10 plug style tap to get rid of the plug style tapered lead in.

oh so this is more complicated then just buying another tap. ok back to the drawing board
 
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