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Reference Charts
Quick answer: Nineteen lookup tables covering drilling, fasteners, tools and materials — each one built from the published standard rather than copied from another chart, with the source named on every page.
The numbers you need mid-job, without hunting through four different tables to find one of them.
Every chart here is generated directly from the governing standard — ASME, ASTM, ISO, ACI or the model codes — and computed rather than transcribed, so rounding errors do not propagate in from someone else’s chart. Each page names its sources at the bottom so you can check any figure at its origin.
Drilling and tapping
Everything that decides which bit goes in the chuck.
Fasteners
Sizes, grades and the torque that goes with them.
Tools and conversions
The chart you want when the wrong tool is the only one to hand.
Materials
What the label says versus what you actually get.
Frequently asked questions
What is the most useful chart for a home workshop?
The drill bit size chart and the fraction to decimal chart between them answer most shop questions. Add the pilot hole chart if you work in wood and the wrench conversion chart if you own both SAE and metric tools.
Are these charts accurate enough for professional work?
The figures come from the published standards and are computed rather than transcribed. Where a chart carries a code-derived value — nailing schedules, rebar cover, wire ampacity — your local jurisdiction's adopted code governs, and every page says so.
Can I print these charts?
Yes — every page prints cleanly from your browser. For anything that must come out at a physical size, such as a ruler or protractor, use the printables section instead, since those are PDFs drawn at exact dimensions.
How often are the charts updated?
They are reviewed when the underlying standard changes. Standards bodies revise infrequently, but manufacturers change product specifications more often — where a data sheet disagrees with a chart here, the data sheet governs.