Terms of use

Last updated October 19, 2026. By using whatsizedrillbit.com you agree to these terms. If you don't agree, please don't use the site.

Reference information only

The drill sizes, charts, calculator results and guides are general reference information. They are standard values for common taps and screws, not instructions for a particular job. Results depend on your tools, material, machine and technique. Where a tap, screw or tool maker gives a different value, follow the maker. Test on scrap when it matters.

Safety

Drilling and tapping involve rotating tools, sharp edges, flying chips and broken tool fragments. Wear eye protection, secure the work, and follow your tool makers' safety instructions. For structural, pressure, lifting or safety-critical work, use the fastener maker's engineering data and the applicable codes, and get qualified advice.

No warranty

We work to keep the information accurate and correct errors when we find them, but the site is provided "as is" without warranties of any kind, including accuracy, completeness or fitness for a particular purpose.

Limitation of liability

To the fullest extent the law allows, Evergreen Digital Media LLC is not liable for any loss or damage arising from use of the site or reliance on its content, including damaged parts, broken tools or lost time.

Copyright

The text, charts, design and images on this site are owned by Evergreen Digital Media LLC. You may print the charts for your own shop and link to any page. Please don't republish the content or images elsewhere without permission. Dimensional facts themselves are not ours to own, and you are free to use them.

Links to other sites

Pages link to sources, tool makers and Amazon. We are not responsible for those sites' content or policies.

Changes and contact

We may update these terms; the date above shows the current version. These terms are governed by the laws of the State of Oregon, USA. Questions: [email protected].