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    • #53548


      As a heating man for 42 years i use to have a chart of bit sizes for drilling orifices. Since retiring 13 years ago it has long ago disappeard and today nobody knows what i am requesting.

      Can you direct me to a source or send me a chart?


    • #264855
      Unregistered-Henry in MI

      I grabbed a copy of a nationally distributed industrial tool catalog and got a chart from number 97, .0059″, thru letter z and on to 1-11/64″. There are only a few large industrial tool catalogs covering everything that might be used in a large machine shop but the catalogs have with covers added for small tool distributors across the country.

      For the drills, industrial supply houses are a good source, particularly to number 80 but hobby shops stock or can get them up in number to 90.

      Henry in MI

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