Sure would be nice IMO if common drill sizes fit tap needs, or vice versa.
Oh well.

Have researched and found equivalent tap drill charts.

http://www.wit.edu/academics/csm/rou...rill_sizes.htm

http://www.cloudsociety.org/Techs/May%202003.pdf

http://www.offroaders.com/info/tech-...aps-drills.htm

http://raskcycle.com/techtip/webdoc9.html

I can find individual drills to match taps. I can find tap and die sets. I
have a cheap set of taps. Where can I find a drill set (43, 38, 36, 29, 25,
20, 16, etc) to match taps?

Sorry if any of my lingo is incorrect.

BTW. Anyone know where to find a chart of closest standard drill sizes for
tap sizes, please? I did the dividing and made my own little list, but
would like to see someone else's.

Nice group. Thanks in advance.

Mr. Doe
The first link cited by you gives the sizes of the numbered drills listed.
I think what you are looking for is a NUMBERED drill set. These are
standard items at better tool emporiums. look at MSC, Travers tool, or any
of the other tool vendors. You may even find some sets on e-bay. What you
would be looking for is a set from 1 to 60.
lg
no neat sig line.

"John Doe" wrote in message
...
Sure would be nice IMO if common drill sizes fit tap needs, or vice versa.
Oh well.

Have researched and found equivalent tap drill charts.

http://www.wit.edu/academics/csm/rou...rill_sizes.htm

http://www.cloudsociety.org/Techs/May%202003.pdf

http://www.offroaders.com/info/tech-...aps-drills.htm

http://raskcycle.com/techtip/webdoc9.html

I can find individual drills to match taps. I can find tap and die sets. I
have a cheap set of taps. Where can I find a drill set (43, 38, 36, 29,
25,
20, 16, etc) to match taps?

Sorry if any of my lingo is incorrect.

BTW. Anyone know where to find a chart of closest standard drill sizes for
tap sizes, please? I did the dividing and made my own little list, but
would like to see someone else's.

Nice group. Thanks in advance.

Most industrial suppliers have tap and drill stands or cases. Hout is one
brand. They hold the tap drill, tap and some have a clearance drill also.

In article ,
John Doe wrote:
Sure would be nice IMO if common drill sizes fit tap needs, or vice versa.
Oh well.

Have researched and found equivalent tap drill charts.

http://www.wit.edu/academics/csm/rou...rill_sizes.htm

http://www.cloudsociety.org/Techs/May%202003.pdf

http://www.offroaders.com/info/tech-...aps-drills.htm

http://raskcycle.com/techtip/webdoc9.html

I can find individual drills to match taps. I can find tap and die sets. I
have a cheap set of taps. Where can I find a drill set (43, 38, 36, 29, 25,
20, 16, etc) to match taps?

The standard set of wire size drills (the number sizes) covers
from #1 down to a #60. There is an additional set from #61 down through
#80, but you are highly unlikely to need these for taps.

There are good sets of taps and matching tap drills in indexes
similar to drill indexes available (MSC is one of the places which sell
them). This gets you the right size drills for the taps which come in
the set -- but the set does not cover all sizes -- just a convenient
collection of common sizes.

These sets can be purchased at industrial hardware stores, but
you are highly unlikely to find them in places like Home Depot.

MSC is one mail order source which has a wide range of drills,
and you can find these drill in all kinds of qualities, materials, and
point styles. My own preference is high cobalt screw machine length
with split points.

You can get a pretty good idea of the quality by the price at a
place like MSC. You can get 118 drill sets for as low as about $30.00
(That covers fractional sizes (in 1/64" steps), number sizes (1-60), and
letter sizes (start where the #1 stops with the 'A' size, going up to
'Z' (still below 1/2" in size).

The $30.00 sets are junk.

An 118 bit set of reasonable quality "Made in USA" drills will
probably sell for about $127.00 or so when on sale. The top end
(Cleveland or similar) will probably go for about twice that. Scale the
price down if all you want is the number sizes.

Sorry if any of my lingo is incorrect.

BTW. Anyone know where to find a chart of closest standard drill sizes for
tap sizes, please?

Those *are* the closest standard sizes -- unless by standard,
you mean the closest *fractional* inch sizes. Those are not close
enough to make good threads in a lot of the sizes.

You can convert the fractional sizes to decimal by simple
division. You can look up the number sizes (and the letter sizes) on
the web -- each of them will be listed also as a decimal fraction
equivalent. Note that the "standard" sizes are for a certain percentage
thread depth. For more strength, you want a higher percentage, but that
is more difficult to cut. For easier cutting (at the expense of
strength), you can go for a lower percentage (a slightly larger drill
bit). In either case, the nearest size for looser or tighter will also
usually be a number size. The number (and letter) sizes were designed
to fill in the gaps in between the fractional sizes (with the exception
of an 'F' drill, which happens to match a 1/4" drill (0.250").

I did the dividing and made my own little list, but
would like to see someone else's.

There are such charts in various catalogs, including the MSC
catalog -- and Starrett sells wall charts with the number, letter, and
fractional sizes all in a single chart.

Best of luck,
DoN.

--
Email: | Voice (all times): (703) 938-4564
(too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html
--- Black Holes are where God is dividing by zero ---

On Tue, 16 Dec 2003 02:29:58 GMT, John Doe wrote:

Sure would be nice IMO if common drill sizes fit tap needs, or vice versa.
Oh well.

Have researched and found equivalent tap drill charts.

http://www.wit.edu/academics/csm/rou...rill_sizes.htm

http://www.cloudsociety.org/Techs/May%202003.pdf

http://www.offroaders.com/info/tech-...aps-drills.htm

http://raskcycle.com/techtip/webdoc9.html

I can find individual drills to match taps. I can find tap and die sets. I
have a cheap set of taps. Where can I find a drill set (43, 38, 36, 29, 25,
20, 16, etc) to match taps?
I'd buy them individually, 2 at a time. They break easy.

Ron Thompson
On the Beautiful Mississippi Gulf Coast
USA

http://www.plansandprojects.com

When you hear the phrase "Super size that for ya?," they are really talking about your ass.

snip
to fill in the gaps in between the fractional sizes (with the exception
of an 'F' drill, which happens to match a 1/4" drill (0.250").
snip

An "E" drill is .250", not an "F" drill.

Pretty minor nit to pick, but figured I'd point it out, anyway.

Mike

In article ,
The Davenports wrote:
snip
to fill in the gaps in between the fractional sizes (with the exception
of an 'F' drill, which happens to match a 1/4" drill (0.250").
snip

An "E" drill is .250", not an "F" drill.

Pretty minor nit to pick, but figured I'd point it out, anyway.

You got me! I knew that I should have gone down to the shop to
verify it -- or picked up my _Machinery's Handbook_. :-)

Enjoy,
DoN.

--
Email: | Voice (all times): (703) 938-4564
(too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html
--- Black Holes are where God is dividing by zero ---