Observed arrival · 2026-10-07
A pocket reference for JIS threads, pipes, and seals
サクッとJIS is a free reference and calculator for mechanical-design and piping dimensions, including bolts, steel pipe, threads, and O-rings.
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Mechanical designers, pipefitters, and workshop users checking JIS dimensions
- Worth noticing
- Values are paired with a JIS standard number and edition; the site also exposes calculation logic and cautions users to verify important applications.
Field notes
The search accepts common designations and groups related results—for example, a nominal size can lead to bolt-hole, across-flats, outside-diameter, or groove dimensions. The reference material spans flange pressure classes, pipe schedules, O-ring series, and thread sizes; printable A4 sheets are described for posting in a workshop. The operator identifies the site as unofficial and says standards sources and editions are shown.
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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