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Contact MachinistData
Have a question, a correction or feedback about a chart, a calculator or the site in general? We'd love to hear from you.
How to reach us
The easiest way to get in touch is by email. We aim to reply to all enquiries.
Email: support@machinistdata.com
What to include
To help us respond quickly, please include:
- The page or thread you're referring to (for example, a specific drill size or chart).
- A short description of your question, correction or issue.
- If it's a data question, any values you believe are incorrect and the reference you're using.
What to expect
We read every message. Depending on the volume we receive, please allow a few days for a reply. For urgent accuracy questions about a specific machining job, please always verify against the relevant thread standard or your manufacturer's specification.
Response time
We do our best to respond within a reasonable timeframe. If you send a question about data accuracy, we will investigate and correct the site if needed.