Download the Dataset
Every table on this site, as machine-readable bundles — regenerated from the
canonical data on every deploy, so a download can never drift from the pages.
Each JSON bundle carries a meta block with its record count,
generation date, sources, and license. Prefer an API?
See the JSON API, or grab the whole graph as
/search-index.json.
| Dataset | Records | Contents | Download |
|---|---|---|---|
| drills | 309 | Standard twist drill sizes, four systems | JSON · CSV |
| threads | 65 | UNC/UNF + ISO metric threads with tap drills and clearance holes | JSON · CSV |
| pipe | 39 | NPS dimensions per schedule, with NPT | JSON · CSV |
| o-rings | 349 | All AS568 O-ring sizes | JSON · CSV |
| bearings | 74 | Deep-groove ball bearing boundary dimensions | JSON · CSV |
| wire-awg | 44 | AWG nominal diameters with derived areas | JSON · CSV |
| sheet-gauges | 28 | Sheet-metal gauge thickness by material | JSON · CSV |
License
The compiled dataset is licensed CC BY 4.0 — use it freely, including commercially, with attribution to BenchReference (benchreference.com). The underlying dimensions are facts from the published standards cited per value on the sources page; the license covers this compilation, normalization, and validation work, not the standards themselves.
Citing this data
Cite as: BenchReference physical standards dataset, benchreference.com/data/, retrieved [date] — and cite the governing standard (ASME B94.11M, SAE AS568, ISO 15, …) for the values themselves. Corrections are logged on the changelog; values never change silently.