Drill Bit Comparison Chart?

tracdoc · Feb 5, 2006

I have been looking (unsuccessfully, so far) for a simple chart or table which compares sizes of twist drill bits in fractional, wire gauge, metric and letter sizes. For example, what is the closest or equivalent fractional size of a #30 bit? Or, what is the closest metric size to a 9/32" bit?

Anyone have such a table or a link on-line to one? Thanks lots in advance for any help.

ronjhall · Feb 5, 2006

How about this one. Click Here

tracdoc · Feb 5, 2006

Ron,

You're a gentleman. Many, many thanks. That's exactly what I needed. I've bookmarked, and I will also print out to keep on the wall in the garage.

5030 · Feb 5, 2006

L.S.Starrett, Brown & Sharpe and Production Tool & Supply all print and sell a wall chart on plastic (about 3 foot x 2 foot) that lists all the conversions, tap drill sizes clearing sizes, decimal equivalents and always, at the bottom, a little advertising blurb.

No shop is complete without one and of course a "my wife can't see" calender. /forums/images/graemlins/grin.gif

ronjhall · Feb 5, 2006

Ebay has several of the charts listed. Price is cheap. Click Here My old Starrett chart does not have metric on it. Maybe I should bid on one. /forums/images/graemlins/grin.gif

5030 · Feb 5, 2006

Ron:

You are retired....you don't need no metric......... /forums/images/graemlins/grin.gif

ronjhall · Feb 5, 2006

Your right. I do not own any metric drills. /forums/images/graemlins/wink.gif
But I own a <font color="orange"> Kubota </font> and reply to post on TBN. /forums/images/graemlins/cool.gif /forums/images/graemlins/grin.gif

5030 · Feb 5, 2006

Ron:

I have some parabolic metric twist drills in bulk in my storage cabinet, want some??

ronjhall · Feb 5, 2006

I believe I have a good section of drills that should last me until I give up on doing shop work. Most of them are sharp unless I forgot to sharpen them when I cleaned up from the last project. /forums/images/graemlins/wink.gif