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Home / Resources / A Die Casting Supplier Audit Checklist for Buyers
Design Guides

A Die Casting Supplier Audit Checklist for Buyers

A die casting supplier audit should follow a real component from incoming material to released shipment.

Written by ZAODA Updated Oct 30, 2026
Inspection station in the authorized production photo collection
ZAODA measuring-station photograph; acceptance methods and limits are defined for each project.

A die casting supplier audit should follow a real component from incoming material to released shipment. The goal is to test whether records, decisions and physical work agree. A room full of equipment is less informative than a traceable example of how an abnormal lot was controlled.

Separate project milestones and acceptance

Follow one identified production lot

Audit area Request Check against the actual work
Material Batch identity and required evidence Link to the casting lot
Tool and process Tool revision and approved conditions Correct setup at the operation
Inspection Method, gauge and result Same drawing revision and part identity
Nonconformance Containment and disposition record Separation and release authority
External processing Transfer and return records Preserved identity and acceptance
Shipment Release and packaging records Agreed delivered scope

Use this as a starting checklist, adapting the questions to the component. Do not convert a generic audit score into approval for every material, process or product family.

Ask people to demonstrate the control

Choose a dimension and have the team show how it is measured. Ask how an operator finds the current instruction, reacts to a failed check and prevents mixed revisions. Review gauge identification and relevant calibration status without assuming calibration alone validates the measurement method.

For an illustrative pressure housing, follow the connection between machining, cleaning, leak-test settings and shipment release. If the report cannot be linked to the actual lot and condition, an attractive pass sheet does not establish traceability.

Examine an exception, not only a successful order

Ask for a suitably redacted example of containment, root-cause investigation and verified corrective action. Check who approved the disposition and how affected material was located. Avoid collecting unrelated confidential customer drawings or personal records.

Confirm the scope and validity of any certification relevant to your procurement requirement. Record operations performed outside the audited facility and how they are controlled. Distinguish observed evidence from statements that need follow-up.

Close the audit with specific findings, required evidence, responsible roles and due dates. Production approval should reflect the component's risks and sample results as well as the site visit. A focused audit helps the buyer and supplier agree what still needs demonstration before volume release.

References