Buyers usually see the drawing, quotation and finished part. Inside a factory, stable results depend on what engineering, production and quality teams decide before the first batch is released.
Quick Answer
Describe the defect, identify affected lots, assess fit and function, define the rework method, require responsible approval and re-inspect the result before release.
A Small Deviation With a Large Documentation Gap
A surface mark was accepted verbally because it was on a hidden area. Later, the same appearance appeared on a visible surface and nobody could confirm the original boundary. The part decision was reasonable; the missing record made the next decision difficult.
Describe the Actual Condition
Record where the deviation is, how large it is, how many pieces are affected and which drawing or sample requirement it relates to. General words such as minor or acceptable are not enough.
Separate Rework From Use-As-Is
Rework changes the part to meet a requirement. Use-as-is accepts a known deviation. They need different technical reasoning and approval records.
Check the Effect on the Assembly
A deviation may be harmless on a hidden cosmetic surface and unacceptable at a sealing, locating or customer-facing interface. The decision should follow the product risk.
Re-inspect After the Action
Rework should have a defined method and acceptance check. A part is not released simply because the rework operation was completed.
Nbfeiyu Factory View
Engineering, production and quality teams need one shared disposition record so the decision follows the part through finishing, assembly and shipment.
Buyer Checklist
- Describe location, size and affected quantity.
- Identify the drawing, sample or requirement involved.
- Distinguish rework from use-as-is approval.
- Assess fit, function, appearance and compliance risk.
- Name the approval authority.
- Re-inspect and link the result to the lot.
FAQ
Can a buyer approve a deviation by email?
Email may support communication, but the final disposition should be retained in the controlled quality record with clear part and lot identification.
Does every rework need customer approval?
Not always. The requirement depends on the agreed quality system and risk, but critical deviations should have responsible engineering or customer approval.
Why keep deviation records after shipment?
They support traceability, repeat-order decisions and investigation if a similar condition appears later.
Conclusion
Rework is not automatically a quality failure, and acceptance is not automatically a quality success. The important point is that the disposition is technically understood, approved and traceable. Clear requirements let the factory act early, while changes are still manageable.
Need Help With This OEM Project?
Send the drawing, approved sample and deviation requirements. Nbfeiyu can help define a traceable rework and disposition process for your OEM parts.