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| Decision field | Free accountFOURSOURCE Supplier NetworkGlobalRemove | Open accessConstruction Classification & Callout Verification RecordGlobalRemove | Open accessYarn Database EU Dyers and MakersEuropean UnionRemove | Open accessKnitting Needle to Crochet Hook Size ChartGlobalRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Source production | Source production | Choose materials | Learn techniques |
| Also useful for | No additional job recorded | No additional job recorded | No additional job recorded | No additional job recorded |
| Area | Production | Production | Yarn | Yarn |
| Best for | Searching global apparel and textile production capabilities | Using construction codes without treating classification as a machine setting, material assignment, supplier translation, or performance guarantee | Finding independent EU yarn or fibre dyers with off-Ravelry purchase routes | Finding the current CYC hook and needle aliases that share one known nominal metric diameter before confirming project gauge |
| Know before using | The company count is a changing platform claim. Search fields, profiles, certificates, locations, and account access do not independently verify the legal entity, factory ownership, capability, capacity, certificate validity or scope, compliance performance, delivery, or project fit. Confirm the site and subcontracting, credentials with issuers, samples, audits when appropriate, specifications, contracts, and commercial terms. | The record does not reproduce licensed code diagrams, verify a user's proposed code, authorize an ISO and ASTM crosswalk, select a construction, set stitch density or machine settings, prove supplier repeatability or performance, or replace the licensed standards and qualified construction, sewing, production, testing, safety, and quality review. | It is one curator's intentionally selective, off-Ravelry-oriented database, inventories change, and paid supporters can receive rotating priority placement; verify availability, fibre claims, shipping, and terms directly. | A shared nominal diameter does not make a knitting needle and crochet hook interchangeable or predict equal gauge or fabric. The reference is not a physical measurement, manufacturer inspection, UK or Canadian conversion, steel-hook chart, tool recommendation, yarn assignment, or project approval. |
| Practical access | ||||
| For | Apparel brands | Apparel brands | Makers | Makers |
| Location or jurisdiction | Global | Global | European Union | Global |
| Access | Free account | Open access | Open access | Open access |
| Format | Marketplace | Stitch Authority | Directory | Stitch Authority |
| Source type | Commercial marketplace | Stitch Authority | Community database | Stitch Authority |
| Source and review | ||||
| What the source establishes | FOURSOURCE's current public network page presents an operator-reported global company count and country or territory search. It says logged-in users can narrow results by compliance certificates, product groups, fabric types, target groups, minimum order quantities, and other fields, with a free-trial and supplier sign-up route. | The guide cites the official DLA cancellation record for FED-STD-751A and the current public scopes and statuses of ISO 4915:1991, ISO 4916:1991, and ASTM D6193-16(2025). It records ISO 4915's July 2026 systematic review and keeps classification, ambiguous-code recovery, translation, complete process definition, physical verification, and performance evidence separate. | The individually researched database offers free listings and sortable yarn, fibre, designer, editor, accessory, and location views; the EU page spans multiple countries and direct seller profiles. | Rechecked July 28, 2026. The lookup reproduces the current public Craft Yarn Council metric and U.S. alias rows, aligns hooks and needles only when their nominal millimetre value matches, and leaves missing rows or aliases unfilled. |
| Linked page reviewed | Jul 21, 2026 | Jul 28, 2026 | Jul 15, 2026 | Jul 28, 2026 |
| Next review due | Jan 17, 2027 | Jul 28, 2027 | Jan 11, 2027 | Jul 28, 2027 |
| Inspect | ||||
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