Observed arrival · 2026-11-11
ThreadSizeGuide: workshop charts with their sources attached
A public reference for tap-drill sizes, thread and drill charts, conversions, clearance holes, and practical machining guides.
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Machinists and workshop users checking sizes
- Worth noticing
- Each technical record is labeled with its standard family, source, classification, verification date, and limitations.
Field notes
The homepage says its calculations run in the browser from static data, with inputs, units, methodology, and limitations kept visible. Its reference routes cover fractional, metric, number, and letter drill systems, and distinguish practical clearance guidance from formal tolerance requirements. The page also says copyrighted standards are registered rather than copied.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
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