Supplier Quality Scorecard: Rate Any Supplier in 10 Questions
This free scorecard rates any supplier across the ten dimensions that predict supply risk: defect rates, on-time delivery, corrective action behavior, certifications, documentation, change management, sub-tier control, stability, audit results, and continuous improvement. It is built for supplier quality engineers and procurement leaders at discrete manufacturers, including aerospace and defense programs with flow-down requirements. Score one supplier at a time and you get a classification from high-risk to strategic partner, with specific actions for each band. Run it across your top ten suppliers and you have an instant risk-ranked development agenda.
1. What is this supplier's defect rate (PPM) over the last 12 months?
PPM = defective parts per million received. World class for machined and electronic components is under 100 PPM.
2. What share of this supplier's shipments arrive on time to the committed date?
3. How does the supplier respond to corrective action requests (SCARs)?
Look at both speed and depth: a fast answer that blames the operator is not a root-cause response.
4. What quality certifications does the supplier hold and maintain?
5. How complete and timely is the supplier's quality documentation (FAI, PPAP, certs of conformance, material certs)?
6. How does the supplier handle change management (process, material, or sub-tier changes)?
Unnotified changes are a leading cause of sudden quality escapes, especially in aerospace and electronics.
7. How much visibility and control does the supplier have over its own sub-tier suppliers?
8. How would you rate the supplier's financial and capacity stability?
9. What did your most recent audit or site visit of this supplier find?
10. Does the supplier show evidence of continuous improvement and cost transparency?
How the scoring model works
Each of the ten questions scores zero to three, and your total converts to a percentage matched against four bands. The dimensions are weighted equally on purpose: supplier failures rarely come from the metric you watch most, PPM, and more often from the ones you watch least, such as unnotified process changes, sub-tier substitutions, or financial distress that shows up first as lead-time volatility. A supplier scoring well on parts quality but poorly on change management and sub-tier control is a latent escape waiting for a trigger. The band thresholds (40, 65, 85) mirror the classification logic used in mature supplier management programs: containment, development, maintenance, and integration.
Supplier scorecard data model: PPM and defect rate fields
If you are building this scorecard in an ERP, data warehouse or spreadsheet rather than scoring it by hand, the model needs one supplier master table and one period-level fact table per supplier and month. Keep the raw counts as stored fields and calculate the rates, so a restated receipt or a late rejection corrects the history instead of leaving a stale percentage. Compute PPM as rejected quantity divided by received quantity times 1,000,000, and the defect rate percentage as rejected divided by received times 100. Count quantity of parts, not number of lots, unless you also keep a separate lot rejection rate.
- Keys: supplier_id, part_number (optional, for part-level PPM), period (month or quarter), site
- Quality counts: qty_received, qty_inspected, qty_rejected, lots_received, lots_rejected
- Calculated: ppm = qty_rejected / qty_received * 1,000,000 and defect_rate_pct = qty_rejected / qty_received * 100
- Delivery counts: lines_due, lines_on_time, plus the commit date and receipt date used to judge lateness
- Corrective action: scar_issued, scar_closed, days_to_close, root_cause_verified (yes or no), repeat_defect (yes or no)
- Qualitative inputs scored 0 to 3: certification status, documentation, change notification, sub-tier control, financial stability, last audit result, improvement activity
- Output fields: total_score, band, scored_by, scored_on, so every rating can be traced and re-run
Benchmarks behind the questions
The answer thresholds reflect widely used supplier performance norms in discrete manufacturing:
- PPM: under 100 is world class for machined and electronic components; over 10,000 (1% defective) is unacceptable for production parts.
- On-time delivery above 95% is the standard bar for approved suppliers; below 80% actively disrupts production scheduling.
- SCAR closure with verified root cause within 30 days is the expectation in AS9100 and IATF environments.
- Unnotified change is a leading cause of sudden quality escapes, which is why change management scores as heavily as defect rate.
How to use the results across your supply base
Score suppliers representing your top 80% of spend plus any single-source criticals regardless of spend. Plot them by band and criticality: a high-risk single-source supplier is your most urgent problem even if the spend is small, while a conditional supplier with easy alternates is routine management. Re-score quarterly for conditional and high-risk suppliers, twice yearly for approved ones. The most common finding is concentration risk: several critical parts flowing through one conditional supplier. When that appears, dual-sourcing qualification should start before, not after, the next escape. Resist grade inflation; the scorecard only works if the answers reflect evidence like receiving records and SCAR logs rather than relationship goodwill.
How Netray automates supplier quality management
Manual scorecards decay because the data lives in your ERP and nobody has time to compile it. Netray builds automated supplier scorecards directly on Infor SyteLine, LN, and Baan data: receiving inspections, rejections, on-time performance, and NCR links roll up into live PPM and delivery metrics per supplier, refreshed continuously. Our AI models flag deteriorating trends, such as slowing SCAR closure or drifting lead times, before they become escapes. For aerospace and defense, flow-down and certificate tracking are built in and everything runs on-prem. Score your critical suppliers here, then let us show you the same scorecard generating itself from your ERP.
Frequently Asked Questions
What PPM level should I require from suppliers?
It depends on part criticality and process type. Under 100 PPM is world class and a fair expectation for mature machined, stamped, and electronic components. For complex assemblies or low-volume aerospace work, 500-2,000 PPM may be realistic, with criticality managed through inspection strategy instead. The more important discipline is trend and honesty: a supplier reporting zero defects usually is not measuring, which is why the scorecard treats unmeasured as the lowest score.
How often should suppliers be scored?
Quarterly for conditional and high-risk suppliers, where you are actively driving improvement and need to see whether commitments are landing. Twice yearly is sufficient for approved and strategic suppliers, focusing on trend direction. The cadence problem disappears entirely once scorecards are automated from ERP receiving and quality records, which is the end state worth building toward: continuous scores with alerts on deterioration rather than periodic manual compilation.
What should I do about a high-risk supplier I cannot replace?
Single-source, high-risk suppliers demand parallel tracks: protect and develop. Protection means 100% or source inspection, buffer stock sized to requalification lead time, and contractual change-notification requirements. Development means an improvement plan with dated, measurable milestones and executive engagement on both sides, because working-level pressure alone rarely moves a struggling supplier. Simultaneously, begin qualifying an alternate even if it takes years; the qualification clock only starts when you start it.
Ask Netray to build live, ERP-fed supplier scorecards so this rating updates itself every day.
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