- STEP 01 · REVIEW TIME
1. Requirements review
The drawing, model, purchase order and specification are reviewed so dimensions, material and finish requirements are clear before quoting.
- STEP 02 · QUOTE IN
2. Supplier approval and process control
Suppliers are approved and outsourced processes controlled. Calibrated inspection and test equipment is required for the characteristics being verified.
- STEP 03 · LEAD TIME PER QUOTE
3. First article inspection planning
FAI is planned before the first production run to document that a representative first part meets all specified requirements.
- STEP 04 · TERMS
4. In-process checks
Checks during the run catch drift before a full lot is completed.
5. Documented final inspection
Final inspection is recorded against the drawing and purchase order before parts are released.
6. Nonconformance control and corrective action
Any nonconformance is documented, dispositioned and followed by corrective action that addresses the cause, not just the symptom.
Quality & Inspection
Quality Assurance Manufacturing and Inspection
Sourcing Repository manages quality assurance manufacturing for custom parts: documented controls, first article inspection and final inspection before parts ship.
Quick answer
Quality assurance manufacturing is the planned system of controls, procedures, records and audits that prevents defects and gives confidence requirements will be met. Sourcing Repository applies it to custom parts by collecting quotes from vetted suppliers, then managing first article inspection, in-process checks and final inspection before delivery.
Overview
Quality assurance manufacturing: what this page covers
Quality assurance (QA) in manufacturing is the planned, systematic part of quality management that provides confidence manufacturing requirements will be fulfilled. Quality control (QC) is the inspection, measurement, testing and disposition activity used to verify product conformance.
For a buyer, the difference matters. QA controls procedures, training, records, suppliers and corrective action across production. QC verifies the parts you actually receive. A program that only inspects at the end detects nonconformance but does not remove the process cause behind it.
Sourcing Repository is a manufacturing broker. We do not own factories or machines. We collect quotes from a vetted supplier network, manage quality and inspection, and deliver parts to your drawing.
Start an RFQDetails
Manufacturing quality control: the core controls
Manufacturing quality control rests on four control routes. Each covers a different risk, and most custom-part programs use more than one.
| Route | What it does | Trade-off |
|---|---|---|
| Process-based QA system | Controls procedures, training, records, suppliers and corrective action across production. | Requires documented processes, audits and ongoing management resources. |
| Statistical process control | Uses process data to detect drift before nonconforming product is produced. | Needs stable processes, measurement capability and appropriate sampling. |
| Inspection and testing | Directly verifies dimensions, materials, performance and workmanship. | Detection after production does not prevent the original process cause. |
| First article inspection | Documents that a representative first production part meets all specified requirements. | Comprehensive review can delay release and requires complete engineering records. |
Quality assurance vs quality control
100% inspection vs sampling
Process
How the inspection process runs, step by step
The inspection process is a six-step sequence. This quality assurance manufacturing sequence is managed by Sourcing Repository on each custom-part order, and suppliers in the vetted network perform the work.
Have a drawing ready?
Upload your files and quantity. You get DFM notes and quotes from matched suppliers.
Standards and proof
Standards and proof: FAI, AS9102 and PPAP
FAI, AS9102 and PPAP are the standards and proof buyers use to confirm a part meets requirements. First article inspection is a planned, complete, independent, documented verification that a representative first production item meets engineering and purchase requirements. It is typically required for new or changed products, processes, tooling, locations or configurations when the customer or applicable standard requires it.
9001
ISO 9001
Suppliers we work with hold ISO 9001 quality management certification.
TF
IATF 16949
Automotive suppliers we work with hold IATF 16949 certification for production part quality.
AS
AS9100
Aerospace suppliers we work with hold AS9100 certification.
PP
PPAP
Suppliers we work with submit Production Part Approval Process evidence when a program requires it.
Next steps
Next steps: put quality assurance on your next build
Send your drawing, model and quality requirements. Sourcing Repository collects quotes from vetted suppliers, manages first article inspection and inspection, and delivers parts to specification.
Include the drawing revision, material, finish, inspection level and any FAI or PPAP requirement in your request so the quote reflects the real quality scope.
FAQ
Questions about how sourcing works
Not covered here? Talk to an engineer before you send a drawing.
Talk to an engineerWhat is manufacturing quality assurance?
Manufacturing quality assurance is a planned system of controls, procedures, records and audits intended to prevent defects and provide confidence that requirements will be met. It covers training, supplier control and corrective action, while quality control handles inspection and product verification.
What is a first article inspection?
A first article inspection is a planned, complete, independent and documented verification that a representative first production item meets engineering and purchase requirements. It is planned before the first production run and covers all applicable engineering characteristics.
What documents should a supplier provide?
Requirements vary by part and program. Commonly requested documents include inspection results, material certificates, process certificates, calibration evidence, nonconformance records and FAI documentation. SR confirms the exact document set during quoting.
Can inspection guarantee quality?
No. Inspection detects nonconformance after production and does not prevent the original process cause. Controlled, validated processes with corrective action are needed to prevent recurrence, which is why QA and QC work together.
Ready when you are
Request a quote with your quality requirements
Send your drawing, material, finish and inspection requirements. Sourcing Repository collects quotes from vetted suppliers and manages FAI and inspection through delivery.
Your files stay confidential. NDA available on request.