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RECORDED CONTENT REVIEWS

Review date: 2026-10-02 | language: en
Source SHA-256: 34b4dc8ea9fe5a5e9f75f41c254d6388935f94e524314ebeb939f903baff0d03
/obsolete-machine-parts
/reverse-engineer-a-spare-part
/machinery-spare-parts-from-china
/spare-parts-minimum-order
/how-we-check-a-supplier
/cnc-machining-from-china
/seals-gaskets-and-rubber-parts
/spare-parts-lead-times
/urgent-spare-parts-local-vs-imported

This record reports the scope and boundaries of the recorded content review. It is not a supplier audit, product certification, legal opinion or proof of a fulfilled order.

PRIMARY SOURCE AND WORKSHEET REGISTER (ENGLISH ARTICLES)

https://1688spareparts.com/obsolete-machine-parts
- NSK 6205C3: dimensions, open construction and published speed entry: https://www.nsk.com/engineering/6205c3-apn.html
- NSK 6205DDUC3: same envelope, different sealing and speed data: https://www.nsk.com/engineering/6205dduc3-apn.html
- WIPO: patent rights, territorial scope and licensing: https://www.wipo.int/en/web/patents/faq_patents
- Download: obsolete-part investigation and engineering-release worksheet: https://1688spareparts.com/resources/spare-parts-engineering-release-worksheet.txt

https://1688spareparts.com/reverse-engineer-a-spare-part
- NIST: metrological traceability and measurement uncertainty: https://www.nist.gov/metrology/metrological-traceability
- Thermo Fisher Scientific: limitations of XRF, LIBS and OES material identification: https://www.thermofisher.com/blog/metals/pmi-technologies-whats-the-difference-between-xrf-libs-and-oes/
- Outokumpu Core range datasheet, Table 1: typical chemistry of 304 and 304L: https://www.outokumpu.com/en/products/product-ranges/-/media/files/products/core/outokumpu-core-range-datasheet.pdf?modified=20251117111909&revision=025e9931-a1d5-4c8f-8ff5-f881d38916da
- Thermo Fisher: XRF carbon limitation and OES/LIBS capabilities: https://www.thermofisher.com/blog/metals/pmi-technologies-whats-the-difference-between-xrf-libs-and-oes/
- WIPO: patent rights, territorial scope and licensing: https://www.wipo.int/en/web/patents/faq_patents
- Download: sample-to-drawing assumptions and first-article worksheet: https://1688spareparts.com/resources/spare-parts-engineering-release-worksheet.txt

https://1688spareparts.com/machinery-spare-parts-from-china
- DHL Global Forwarding: chargeable weight by transport mode: https://www.dhl.com/gb-en/home/global-forwarding/freight-forwarding-education-center/calculating-chargeable-weights.html

https://1688spareparts.com/how-we-check-a-supplier
- NIST: metrological traceability and measurement uncertainty: https://www.nist.gov/metrology/metrological-traceability

https://1688spareparts.com/cnc-machining-from-china
- Protolabs: different machining services have different published tolerance scopes: https://www.protolabs.com/resources/design-tips/fine-tuning-tolerances-for-cnc-machined-parts/
- NIST traceability policy and FAQ 5.1.4: uncertainty and fitness for purpose: https://www.nist.gov/metrology/metrological-traceability
- Thermo Fisher Scientific: limitations of XRF, LIBS and OES material identification: https://www.thermofisher.com/blog/metals/pmi-technologies-whats-the-difference-between-xrf-libs-and-oes/
- Download: machined-part RFQ, deviations and engineering-release worksheet: https://1688spareparts.com/resources/spare-parts-engineering-release-worksheet.txt

https://1688spareparts.com/seals-gaskets-and-rubber-parts
- Parker: O-Ring Handbook, compound selection and seal design: https://www.parker.com/content/dam/Parker-com/Literature/Praedifa/Catalogs/Catalog_O-Ring-Handbook_PTD5705-EN.pdf
- Parker: O-Ring Handbook, compound selection and seal design: https://www.parker.com/content/dam/Parker-com/Literature/Praedifa/Catalogs/Catalog_O-Ring-Handbook_PTD5705-EN.pdf

https://1688spareparts.com/spare-parts-lead-times
- US OSHA 1910.147: hazardous-energy control for covered servicing: https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.147

https://1688spareparts.com/urgent-spare-parts-local-vs-imported
- US OSHA 1910.147: hazardous-energy control for covered servicing: https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.147
- Request a scoped spare-parts sourcing quote: https://1688spareparts.com/sourcing

https://1688spareparts.com/cast-and-structural
- Machinery — European Commission: https://single-market-economy.ec.europa.eu/sectors/mechanical-engineering/machinery_en