Drill Calc

Great for 99% of threads metric or imperial. Metric could have a few more of the common pitches listed. A seperate group for BSP threads of both US and UK types would be great.

I was unable to access the app after downloading it. Restarting my phone did not repair it. Money wasted.

This app puts at my fingers all the data I could ever need in the machine shop when tapping time comes around. Very detailed and accurate.

Excellent Reference...

I am a hobbyist machinist. I am always using Drill Calc for looking up drill sizes when I am threading. One feature I would appreciate is an all encompassing decimal lookup chart. This single chart would contain fractional, lettered, numbered and metric drill sizes. I also would find it helpful if you supplied the data for doing external threading.

This is great; all the Inch - Metric and Pipe Information in one app. We deal with both english and metric taps at the machine shop I work for, so this makes it a very handy app.

Functionality of app is great! Good clean layout. I agree that pipe theads would be a great addition, as well as fine threads for metric taps. Clearance drills, counterbores, and reamer drill sizes would also be a welcomed upgrade. I would pay extra for those options even. Keep up the good work

It is a plain ol' drill chart, and it works just fine. Thanks! Would like to have pipe threads too, though.

As far as I can tell does not have though-hole measurements, which would be easy to add to each bolt size and very useful

Great tool for any tool and die maker.