Passing a US OEM’s supplier audit on the first attempt for surgical instrument handles
Non-conformances raised during the buyer’s supplier audit
17 (previous candidate supplier)2
Measured over a 210-day programme
Volume
180,000 handles per year, four variants, 17-4PH material
Client
Surgical instrument OEM, United States
The situation
A US surgical instrument OEM needed a second-source supplier that could pass a full on-site quality system audit rather than only present an ISO 13485 certificate, after its first alternative source failed the audit on process validation records.
What was done
- The requirement was re-specified against a measurable acceptance test before any price was discussed — in this case non-conformances raised during the buyer’s supplier audit measured on incoming goods, not on a supplier’s own paperwork.
- Process control was changed to hold that measurement: material at 17-4PH stainless (1.4542), H1025 condition, hardness at HRC 32–36.
- Evidence was tied to each lot so the buyer could verify the claim rather than trust it. That is why the programme ran 210 days: the first 11 lots were used to prove stability before volume was released.
Evidence you can ask to see
Audit report extract (buyer authorisation on file), IQ/OQ/PQ validation documentation, bioburden test records per lot
These are buyer-side or third-party records, not supplier marketing. Where a document is commercially sensitive we will ask the buyer for permission before sending it, and say so rather than sending a redacted page that proves nothing.
The part involved
| Material | 17-4PH stainless (1.4542), H1025 condition |
|---|---|
| Hardness | HRC 32–36 |
| Dimensional tolerance | ±0.01 mm on featured dimensions, CMM-verified |
| Surface roughness | Ra ≤ 0.4 µm on grip surface |
| Passivation | ASTM F86, citric acid passivation |
| Cleanliness | Particulate and bioburden tested per lot, ISO 11737-1 |