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Quality System for AS9100D Certified CNC Machining

DEK provides AS9100D certified CNC machining alongside ISO 9001:2015 and ISO 13485, all three certified by TÜV and run by one quality department on one factory floor in Shenzhen.

  • IQC, IPQC, FAI and OQC Gates
  • CMM and Spectrometer Checks
  • Lot-Level Traceability
CMM inspecting machined aluminum housing for quality system compliance
  • ±0.005mm
    CMM-Verified Tolerance
  • 8
    Independent Inspectors
  • 5+
    Years per Inspector
  • 23
    Years, Quality Director

Why DEK: One System, One Factory Floor

Every part, whether medical, aerospace or industrial, passes through the same four inspection stages, and every order can ship with material certificates and inspection reports.

AS9100D, ISO 9001:2015 and ISO 13485 are certified by TÜV and applied on one factory floor since 2002. Standard tolerance is ±0.005 mm on machined metal, verified on CMM, and every incoming metal lot is checked on a spectrometer. FAI, material certificates and CoC are available on any CNC machining service order, with no MOQ.

  • Spectrometer on Every Lot

    Alloy composition is checked on all incoming metal, so a bar labeled 7075 or 316L is confirmed to be that grade.

  • CMM to ±0.005 mm

    Features, positions and profiles are inspected in 3D on a coordinate measuring machine.

  • Independent Inspectors

    8 inspectors with 5+ years' export-standard experience report to quality, not to production.

Quality Control Framework

  • Incoming Material

    IQC Verification

  • Machine Setup

    First Part Measured

  • In-Process Quality Control (IPQC)

    Set-Interval Checks · Traveler Records · SPC on Production

  • First Article

    AS9102 Style FAI

  • Final Inspection

    OQC Release

  • Ship With Your Documents

Inspection Flow: IQC, IPQC, FAI, OQC

CNC machining quality control at DEK is a sequence of gates, each with a record. A part that fails at any gate is quarantined and recorded.

  • IQC

    Incoming Quality Control

    Bar and plate are checked against the purchase spec; a spectrometer verifies the alloy and the mill certificate is filed by lot.

  • IPQC

    In-Process Quality Control

    Operators measure the first part off each setup and at set intervals; SPC charts flag drift on production orders.

  • FAI

    First Article Inspection

    Every dimension, note and finish requirement is measured in an AS9102 style report; on production it authorizes the run.

  • OQC

    Outgoing Quality Control

    Sampling plan (100% on critical features of small lots); finish, threads, plating and marking checked, parts photographed.

  • CAPA

    Corrective Action

    A failed part is quarantined on a nonconformance report; nothing out of tolerance ships without your written approval.

An Independent QC Team

Inspectors report to the quality department, not to the shop supervisor whose parts they measure. The department also controls the heat treatment and plating partners used on surface finishing steps.

CMM probe measuring machined engine block on inspection table

  • The Quality Director

    Damon Chen leads the quality department, with 23 years in quality management for export manufacturing.

  • 8 Experienced Inspectors

    Each inspector has 5+ years' experience applying European and American export standards.

Meet the Management Team

Traceability and Documentation

Each order receives a job number that follows the parts from raw material to dispatch, tying together material lot, machine, operator, inspection records and finishing supplier. If a question arises after delivery, DEK can identify the material lot and every inspection result for the affected parts, as ISO 13485 and AS9100D require.

  • Material Certification

    The mill certificate for the lot, matched to DEK's spectrometer result, for any of our CNC machining metals.

  • First Article Inspection Report

    AS9102 style layout with a ballooned drawing and measured values for every characteristic.

  • Dimensional Inspection Report

    Report for OQC sampling, listing the measured values against the drawing.

  • Certificate of Conformance

    States that the parts meet the drawing and the purchase order.

CMM probe touching precision machined aluminum part surface
  • Heat Treatment Certificates
  • Plating Certificates
  • Photos and Video
  • Requested at Quote Stage
  • Most at No Extra Charge

AS9100D Certified CNC Machining and What Each Certificate Means

All three certificates are issued by TÜV and available with a quote. ISO 13485 CNC machining orders default to full traceability and lot control; AS9100D orders to a first article inspection.

  • ISO 9001 certification logo

    ISO 9001:2015

    Quality Management Documented procedures, traceability from raw material to shipped part, and corrective action on any nonconformance. Industrial customers get the same discipline without asking.
  • ISO 13485 certification logo

    ISO 13485

    Medical Devices Risk-based process control, controlled documentation and lot traceability for instrument and device components.
  • AS9100D and ISO 9001 certification logo

    AS9100D

    Aerospace Adds configuration control, first article inspection in AS9102 style covering every drawing feature, counterfeit-material prevention and supplier control to ISO 9001.

Where the Quality System Applies

The same inspection gates and documents apply to these industries and order types.

Inspection Equipment and Nonconformance

The instruments behind each inspection gate, and what happens to a part that fails one.

  • Equipment
  • Nonconformance

  • Inspection Equipment

    Each instrument serves a gate of the inspection flow: alloy checks at IQC, gauges at the machine during IPQC, CMM for FAI and OQC. Critical dimensions are recorded on the job traveler.

    Request a Quote
    Equipment Used for
    Coordinate measuring machine (CMM) 3D inspection of features, positions and profiles to ±0.005 mm
    Spectrometer Alloy composition check on all incoming metal
    Plug, pin and thread gauges Bore, hole and thread go/no-go checks at the machine
    Height gauges and micrometers In-process linear and diameter checks
    Surface roughness tester Ra of ground, polished and as-machined surfaces
    Hardness tester Confirmation of heat-treated and hardened parts

  • How Nonconformance Is Handled

    A part that fails inspection at any gate is quarantined and recorded on a nonconformance report. The quality department decides what happens next, and nothing out of tolerance ships without your written approval.

    A corrective action is opened for the root cause, and customer complaints follow the same CAPA process.

    Request a Quote
    Step What Happens
    Failed part Quarantined, nonconformance report
    Disposition Rework, scrap or documented concession request
    Out-of-tolerance parts Ship only with your written approval
    Root cause Corrective action, verified on the next run
    Customer complaints Same CAPA process

Quality System FAQ

Name the certificates and reports you need; they are built into the quote and job traveler. An engineer replies within 6 hours.

What is AS9100D certified CNC machining?
It means the supplier's quality management system is certified to AS9100 Revision D, the aerospace standard that adds first article inspection, configuration control, counterfeit-part prevention and supplier control to ISO 9001. DEK's certificate is issued by TÜV and applies to any customer who wants that level of documentation.
Do you provide a first article inspection report?
Yes. An FAI report in AS9102 style layout, with a ballooned drawing and measured values for every characteristic, is standard on AS9100D orders and available on request for any other order.
Can you supply material certification with my parts?
Yes. The mill certificate for the material lot is filed at IQC and matched to DEK's own spectrometer check. Both can be sent with the shipment, together with a certificate of conformance.
Is the quality system the same for prototypes and production runs?
Yes. Prototypes go through IQC, IPQC and final inspection just as production parts do. On production orders the FAI additionally authorizes the run and SPC records are kept on critical features.

Ready to Scale Your Project?

Get started with a stable process and controlled quality. Let's discuss your project.

Machined aluminum engine block with threaded holes and smooth finish
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