CNC Supplier Audit Checklist for China

Choose the right machining partner—before the first PO.

This free, ISO 9001-aligned audit checklist is built specifically for CNC machining suppliers in China. It helps engineers and buyers verify capacity, quality systems, and risk controls in a single pass—on-site or remotely.

Download the checklist (XLSX + README):
Davantech_CNC_Supplier_Audit_Checklist_ISO9001.zip

What you get

  • Editable Excel checklist with 10 audit sections and auto-scoring summary
    1. Company & Certification
    2. People & Competence
    3. Equipment & Maintenance
    4. Materials & Traceability
    5. Process Control & Verification
    6. Special Processes & Finishing
    7. Measurement & Records
    8. Nonconformance & Improvement
    9. EHS & 5S
    10. Logistics & Customer
  • Weights + scores (0/1/2) per question, weighted totals per section, and a Grand Score % to compare suppliers side-by-side.
  • Evidence prompts (what to ask for and look at on the shop floor).
  • ISO 9001 clause mapping so quality teams can align findings with your QMS.

Why this works

  • Targets what matters for CNC machining (CMM capability, calibration, 5-axis know-how, in-process checks, MRB discipline, finishing controls).
  • Compresses audit time with a structured, yes/partial/no scoring method and clear evidence requests.
  • Reduces supplier risk by forcing traceability, special-process control, and corrective-action maturity into the conversation.

How to run the audit (fast track)

  1. Pre-screen (desk): Confirm ISO scope covers CNC machining and the certificate is valid (issuer, scope, expiry).
  2. Shop-floor walk: Check 5S, red/green status labeling, quarantine/MRB areas, calibration stickers, and a live job traveler.
  3. Deep dives:
    • Capability: machine list (3/4/5-axis, turning), PM logs, complex part samples.
    • Quality: FAI records, IPQC sheets for CTQs, final inspection reports, CMM programs.
    • Special processes: anodizing/passivation/plating controls, thickness checks, masks/fixturing.
  4. Score + compare: Enter 0/1/2, the sheet calculates section totals and overall Score %.
  5. Close-out: Request missing docs, agree on corrective actions with owners and due dates.

Inside the checklist (sample questions)

Company & Certification

  • Valid ISO 9001:2015 certificate covering CNC machining? Scope, body, and expiry verified.
  • Quality manual and procedures under revision control?

Equipment & Maintenance

  • Up-to-date machine register (make/model/year, 3/4/5-axis, turning, CMM)?
  • Preventive maintenance plan executed (logs/work orders)?

Materials & Traceability

  • Mill certificates kept and tied to jobs/heat lots?
  • Segregation of conforming vs. nonconforming material (visual status, quarantine)?

Process Control & Verification

  • FAI before release to mass production?
  • In-process checks against CTQs with actions for out-of-tolerance?

Nonconformance & Improvement

  • MRB process with containment and documented dispositions?
  • Root cause via 5-Why/Fishbone and verified corrective actions?

Scoring rubric (simple & strict)

 

0 = No/Poor — Not implemented or ineffective
1 = Partial — Implemented but inconsistent or missing evidence
2 = Yes/Effective — Implemented, controlled, and evidenced

Each question has Weight (1–3). The sheet computes Weighted Score and a Grand Score % for an objective supplier comparison.

When to use this audit

  • Shortlisting new CNC suppliers (China-based) for prototypes or production.
  • Annual re-qualification of current suppliers.
  • Before transferring complex parts (tight tolerances, 5-axis, special finishes).
  • As part of a PPAP-lite/FAI gateway for first orders.

Download

  • ZIP (XLSX + README):
    Download now
  • Suggested permanent site path: https://davantech.com/marketing/downloads/Davantech_CNC_Supplier_Audit_Checklist_ISO9001.zip