Observed arrival · 2026-10-07
MachinistCharts: Bench-side reference tables
A free reference site for machinists, with bolt torque, tap drill, drill size, bearing, and steel-grade charts plus calculators.
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- Machinists checking sizes, fits, and fastener data
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- Steel equivalents are labeled nearest matches, not twins; the page directs users to governing standards or mill certificates.
Field notes
The torque section offers dry and lubricated values alongside clamp load, wrench, and tap-drill information. Its steel-grade table spans American, European, Japanese, and Chinese designations, but explicitly treats equivalents as starting points rather than interchangeable specifications. The page also links data files in CSV and JSON formats and states that they use a CC BY 4.0 license.
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Editorial observations of this landing page, not a rating.
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