Build the register around the part and program, not supplier reputation. Record each credible failure scenario, evidence, likelihood and impact, owner, control, and review trigger. Update from award through tooling, samples, production release, and deliveries. For injection molding sourcing, it shows where verification, contract terms, or contingency planning are needed.
A risk register is not a one-time supplier scorecard. A new resin source, mold transfer, drawing revision, late corrective action, or repeat delivery miss should reopen the relevant item.
01
Set the boundary before rating the supplier
Do not begin with a generic questionnaire. Define whether scope includes molded parts, tooling, resin procurement, assembly, packaging, validation evidence, or a combination. Capture the drawing revision, material, demand, cosmetic zones, critical-to-quality features, destination market, records, and decision date. The same injection molding supplier may suit a simple housing but not a tight-tolerance, regulated, or continuity-critical component.
Use engineering, quality, purchasing, operations, and logistics in the first review. ASQ identifies past performance, quality-system maturity, capacity, financial stability, technical support, total cost, and delivery capability as useful selection considerations (Reference 2). Turn each into a program question. Request the production route, maintenance assumptions, demand profile, and recovery plan rather than accepting a generic capacity claim.
Write one cause-and-effect risk per issue. ‘The trial may miss a critical dimension because datum logic and the inspection method are not aligned’ is actionable; ‘quality concern’ is not. Mark evidence as supplied, checked, pending, or rejected. A sales claim, certificate, or sample image is not proof of controlled production.
02
Use one consistent risk-register record
Give every entry an ID; affected part or process; cause; consequence; evidence; likelihood; impact; priority; buyer owner; supplier action owner; due date; acceptance condition; contingency; residual rating; status; and review trigger. ISO 31000 describes identifying, analyzing, evaluating, treating, monitoring, and communicating risk. A concise register makes that cycle useful in sourcing (Reference 1).
Agree rating definitions before comparison. A five-point likelihood scale may run from rare to expected without added control. Impact can address safety or regulatory exposure, functional failure, customer disruption, recovery time, and commercial effect. Scores help prioritise, but escalate a potentially unacceptable safety, legal, or conformance consequence even if likelihood is low.
Every red or amber item needs a buyer owner and supplier action owner. Use measurable closure conditions: ‘quality accepts a control plan linked to drawing revision X’ or ‘buyer verifies tool ownership and transfer terms before a tooling-payment milestone.’
| Risk domain | Typical exposure | Evidence to request | Control or review trigger |
|---|---|---|---|
| Technical and tooling | Part misses dimensional, appearance, or functional requirements | Controlled drawing, resin definition, DFM observations, mold concept, trial results | Close DFM actions before tool release; reopen after drawing, resin, gate, tool, or process change |
| Injection molding quality control | Variation escapes because measurement or reaction rules are unclear | Part-specific control plan, approval evidence, gauge information, corrective-action workflow | Approve measurable criteria; increase review after repeat defects, concessions, or late actions |
| Capacity and delivery | Demand cannot be met or disruption recovery is slow | Demand assumptions, production route, capacity explanation, maintenance and shipment plan | Compare commitment to forecast; reassess after repeated lateness or equipment disruption |
| Commercial and ownership | Scope, tool rights, changes, payment, or liability are disputed | Quote assumptions, change path, tooling ownership, storage, maintenance, transfer terms | Resolve written gaps before award; reopen for scope, ownership, or location changes |
| Traceability and communication | Wrong resin, unapproved change, lost records, or misunderstood requirements | Material and lot approach, revision acknowledgement, contacts, packing labels, record terms | Require written approval for substitution; investigate traceability breaks or market-route changes |
03
Convert supplier claims into quality controls
An acceptable sample does not show repeatability. For contract injection molding, ask how the approved part connects to production: material identification, defined process settings or window where appropriate, inspection frequency, CTQ measurement method, reaction plan, nonconformance handling, and change notification. Match evidence depth to the part’s intended use, risk, and contract requirements.
Where an automotive-style approach is required, AIAG’s core tools provide prompts. AIAG describes FMEA for product and process failure modes; control plans for project-life requirements; PPAP for checking design and specification requirements; and MSA for better measurement data (Reference 3). Agree the actual artifact and acceptance scope in writing; do not assume a named method is used.
For medical, food-contact, electrical, automotive, or other controlled applications, the buyer’s compliance team should define applicable requirements. A supplier certificate or experience in another market does not prove suitability. Record who confirms evidence, what change requires notice, and what records are retained.
04
Control cross-border risk at the handoffs
For a global injection molding supplier, map the chain: design owner, tool owner and location, resin purchaser, molder, subcontracted operation, inspector, packer, exporter, importer of record, and destination. Identify who may change each element and who must approve it. This matters when tooling, molding, and secondary work occur in different locations.
Maintain one controlled specification package, define approval authority, require written revision acknowledgement, and record decisions. For Europe, the United States, and Middle East destinations, confirm customer, product, customs, labelling, material, and shipping requirements for the actual route. Obtain qualified legal, trade, or regulatory advice where needed; export experience is not a compliance conclusion.
Create a proportionate continuity plan: buyer-owned safety-stock parameters, tool-condition records, agreed spares, backup logistics, retained approved samples, or a viable second-source assessment. If a second source is impractical, record the limitation and recovery decision path.
05
Treat, monitor, and reopen risk
For each priority item, avoid it by changing scope or supplier; reduce it through evidence, design work, inspection, or contract controls; share it through clear terms where appropriate; or accept it with authorized rationale. Record residual risk after the action. A supplier is not approved merely because each row has an action; agreed evidence and acceptance conditions must be complete.
Review the register at RFQ release, shortlisting, nomination, DFM completion, tooling release, sample approval, production readiness, and post-launch. Trigger review after a material or process change, forecast change, quality escape, late-delivery trend, tool move, subcontracting change, or unresolved corrective action. Keep closed items, evidence locations, and closure dates visible.
Use the register alongside price comparison. A higher quote may contain clearer measurement evidence or change control, while a lower quote may leave essential work undefined. Compare assumptions and residual risk, then ask whether exposure has simply been transferred to the buyer without an owner or funding path.
06
Buyer checklist before nomination
Use this checklist to decide whether the register supports an award decision rather than only collecting supplier information.
07
Request a risk-register response with your RFQ
For a focused injection molding sourcing review, send InjeForm controlled drawings or a 3D model, material and appearance requirements, volumes, destination market, approval evidence, secondary operations, packaging needs, and milestones. Ask for quote assumptions, open technical questions, proposed quality evidence, tool ownership and change-control assumptions, and risks that need buyer decisions. A clear RFQ lets both parties judge whether the program scope is suitable.
Practical takeaway
Before you move
to the next review.
- Define the part revision, material, CTQs, cosmetic acceptance, demand profile, destination market, and scope before scoring risk.
- Write cause-and-effect risks and separate supplier claims, buyer assumptions, and verified evidence.
- Set likelihood and impact definitions before comparison and document the rationale for high-priority ratings.
- Assign a buyer owner, supplier action owner, due date, acceptance condition, and residual rating to each material risk.
- Link quality risks to measurable acceptance criteria, the inspection method, records, and a reaction plan.
- Put tool ownership, maintenance, storage, transfer, change notification, and subcontracting controls in written terms.
- Schedule reviews from RFQ through launch and reopen the register after changes, escapes, or delivery trends.
FAQ
Common questions
What is an injection molding supplier risk register?
It is a controlled list of program-specific supplier risks, causes, evidence, ratings, owners, actions, due dates, residual risk, and review triggers. It can cover tooling, material, quality control, capacity, contracts, logistics, traceability, and communication.
Should buyers use the same register for every injection molding supplier?
Use the same record structure and rating definitions for fair comparison, but tailor risks and controls to the part, intended use, market, volume, tooling arrangement, and supplier scope.
How is a supplier risk register different from a supplier scorecard?
A scorecard summarizes supplier performance or selection criteria. A risk register records a specific exposure, evidence, treatment, owner, and trigger for the part and program.
What should an RFQ ask an injection molding supplier to disclose?
Ask for quote assumptions, DFM points, resin and tooling assumptions, production and inspection approach, required buyer inputs, capacity, subcontracted operations, change control, approval evidence, delivery assumptions, risks, and exclusions.
References
Source material
- [1] ISO 31000:2018 Risk management — Guidelines
- [2] ASQ: Supplier Quality
- [3] AIAG: Quality Core Tools
This guide is general information for early procurement and engineering discussion. It does not replace product-specific DFM, qualification, validation, regulatory assessment or legal advice.