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Disclaimer

Important safety and accuracy notes before you use our charts and guides.

Last updated November 12, 20263 min readBy WellableMachine Editorial Team

The information published on WellableMachine (https://wellablemachine.com) is provided by the Wellablemachine Editorial Team for general informational and educational purposes only. By using this website, you accept the terms of this Disclaimer. If you do not agree, please do not use the site.

Tool and Workshop Safety

Drilling, tapping, grinding and using power tools involve real risks, including serious injury. You are solely responsible for your own safety and the safety of others when you follow any guide on this website.

  • Always read and follow the tool manufacturer’s instructions, warnings and safety guidelines.
  • Wear appropriate personal protective equipment, such as safety glasses, hearing protection, gloves where suitable and a dust mask or respirator when drilling masonry, concrete or other dusty materials.
  • Secure your workpiece with clamps or a vise, and never hold small parts by hand when drilling.
  • Check for hidden electrical wiring, gas lines and water pipes before drilling into walls, floors or ceilings.
  • Disconnect power or remove the battery before changing bits, blades or accessories.
  • For structural, electrical, plumbing or other safety-critical work, consult a qualified professional and follow local building codes.

WellableMachine is not responsible for any injury, damage or loss resulting from the use or misuse of any tool, technique or information described on this site.

Size Charts and Technical Data

Our tap drill charts, drill bit size charts, conversion tables and hole size recommendations are compiled from published thread and fastener standards and manufacturer data, and are checked carefully before publishing. However:

  • Recommended sizes are general guidance. The best size can vary with the material, thread engagement percentage, tap type (cutting or forming), tolerance class and the exact fastener or anchor used.
  • Always confirm critical dimensions with the tap, fastener or anchor manufacturer’s specifications, and test on scrap material when possible.
  • Rounding and unit conversions (inch, fractional, number, letter and metric) can introduce small differences.

We make no warranties or guarantees about the completeness, accuracy or suitability of any chart or figure for your specific application. Any action you take based on this information is strictly at your own risk.

Accuracy of Product Information

Product specifications, features, prices and availability change often, and manufacturers may update products without notice. We work hard to keep our content current, but we cannot guarantee that every detail is accurate at all times.

Affiliate Disclaimer

WellableMachine is a participant in the Amazon Services LLC Associates Program. As an Amazon Associate, we earn from qualifying purchases. Some links on this site are affiliate links, which means we may earn a commission if you make a purchase, at no extra cost to you. Please read our full Affiliate Disclosure.

Product prices and availability are accurate as of the date and time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of the product.

No Endorsement by Manufacturers

Unless clearly stated, WellableMachine is not affiliated with, sponsored by or endorsed by any of the brands or manufacturers whose products appear on this site. All trademarks belong to their respective owners.

Reviews and Opinions

Our reviews and rankings reflect the opinions of the Wellablemachine Editorial Team, based on the research methods described in our Editorial & Review Policy. Your own results may differ depending on your materials, tools and skill level. Customer ratings we reference come from publicly available sources and represent the views of those customers.

This website contains links to third-party websites, including Amazon. We have no control over the content, privacy practices or availability of those sites and are not responsible for them. Including a link does not imply that we endorse everything on that site.

Limitation of Liability

To the fullest extent permitted by law, WellableMachine and the Wellablemachine Editorial Team will not be liable for any direct, indirect, incidental or consequential loss or damage, including damaged workpieces, tools or property, arising from your use of this website or any product purchased through links on this website.

Contact

If you have any questions about this Disclaimer, or you think a chart contains an error, please contact us.

Questions about this policy?

Our editorial team usually replies within 2–3 business days.

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