Drill Bit Charts
12/1/2013
- Added a Tap Drills for U.S. Sizes chart with drill sizes for 100%, 75%, and 50% threads as well as clearance sizes.
6/12/2014
- Added a Tap Drills for Metric Sizes chart with drill sizes for 75%, and 50% threads as well as clearance sizes. Added a welcome screen to show new features.
6/22/2014
- Added a button to upgrade to Drill Bit Charts Pro which is available for the minimum paid fee It includes a handy Unit Converter and will be getting new features like a newly added Wood Screws chart.
10/21/2014
- Fixed a theme issue on some new devices with previews of Lollipop.
1/10/2016
- Fixed font sizes on some mid-size devices
Drill Bit Charts Pro is an ongoing project that will continue to get more enhancements and become available on more platforms including iPhone and iPad.
Drill Bit Charts Pro is currently available on Android and Windows 10. Drill Bit Charts is available on Windows 8.1 and Windows Phone 8.1
Features coming soon to Drill Bit Charts Pro include:
* Zooming of charts.
* Setting the font size used in the charts.
* Color themes and control of colors in charts.
* Many more charts.
* Copy to clipboard.
* Closest drill help.
* Integration with wearables like Pebble, Pebble Time, and Android Wear.
* A lot more.
Category : Tools
Reviews (30)
Great drill bit chart! It's indespendible when converting from SAE to Metric, and letter sizes. I had to change cellphones and would like to know what happened to my paid version of the app?
Great tool for anyone who uses drill bits. Works online and offline.
Nice app. Just what you need in the shop wood or metal!
Great that everything I need is all in one place. Super time saver!!!
Simple and easy to use. Thanks for creating!
Easy to use. Great for quick reference.
It's good but they need a chart for npt pipe thread.
My fave. I use it all the time. I'd give it 5 stars, but maybe I'm just too tough...
21/23 .913? How did that get in there? Very useful app for machinests.
Trying to upgrade, Not available here. Amazon want me to download the Amazon app, which is on my phone
Handy for metric to decimal Thank you
not user friendly find a better app
Top notch App gives me all i need for my everyday needs
Very handy and useful.
Very nice application 👍
The percentage of thread depth for tapped holes is vital in the selection of the most appropriate tap drill, which by the way is not the size generally listed. 75 to 80 % requires 3 times the torque of a 65% depth and results in great difficulty tapping a mere 2% stronger thread.
This software is quite vital at work where I rely on it for programming and setting up CNC machines, as well as performing maintenance machine shop work. No annoying ads means no leeching of my data, so that is a plus.
This is a really useful app. Easily look up drill sizes with little effort. Absolutely beats using a pdf file.
Appt makes selecting drill size for taps a breeze. Thanks for putting this info in a user friendly ad free appt...
Exactly what I needed. So many different measurements to help find the right size. Easiest app. Thank you.
I use this on a regular basis and I love the app, some sort of a slider or something to highlight rows and columns would be great
Needs no permissions! Easy to navigate. Small size app. Love it and use it.
Easy app! Thank you i am using it daily for fixturing my cnc parts.
A great help for the machine shop or hobby bench
Nice app that's to the point and is exactly what it says
As a machinist and engineer I use this app all the time
Easy but highly useful! Ttanks
The chart is great, however, an inbeded tap drill size calculator would be cool too for calculating special non standard tap drill sizes.
I love it
The perfect drill chart. I don't understand the comment about user friendliness. It's a 'chart'. Select the chart you want and read it. Thanks for including the chart with all sizes. 👍