Terms

Terms of use

Last updated November 13, 2026.

Who provides MetalShopMath

MetalShopMath is provided by AdModifier LLC ("we", "us"). Its pages and calculators are free to use. By using them you agree to these terms with AdModifier LLC.

Check before you cut

The results are worked out from published formulas and standard sizes. They are a starting point for your own judgment, not a replacement for it. Before you drill, tap, cut or tighten anything that matters, check the result against the tool maker’s or fastener maker’s data and your own gauges. Where a maker specifies a torque, a drill or a speed, use theirs.

Names of standards and companies

Names of standards bodies, standards and companies appear only to say where a number comes from. MetalShopMath is not connected with, or endorsed by, any of them.

As it is

The site and calculators are provided as they are, without any promise that a result suits a particular purpose.

Copying

The text, drawings, examples and code of this site are ours. You may link to any page and quote short parts with a link. Please do not copy or republish whole pages, tools or the design.

Changes

We may update these terms; the version on this page is the current one. Questions: hello@metalshopmath.com