How to Vet a Component Supplier: 6 Questions You Should Be Asking

Choosing the wrong supplier doesn't just affect part quality. It introduces real risk into your production line. Late deliveries, inconsistent specs, poor communication—these are not minor issues. They’re avoidable problems that add cost and frustration.

If you're sourcing damper components, you need more than a PO and a handshake. You need a supplier who understands their role in keeping your production stable and your customers satisfied.

Here are six questions that will tell you what kind of supplier you're really dealing with:

1. What certifications do you carry, and can I see them?
You should expect ISO 9001, IRIS, or TS-level documentation depending on your industry. If the supplier hesitates or can't show you current paperwork, keep looking.

2. How do you trace your materials?
If something fails in the field, you need to trace it back to the source. A solid supplier will track materials by lot, document every shift, and be able to identify any quality concerns before they reach you.

3. What does your quality control process include?
Do they test every run or just spot check? Are they automating inspections or relying on human oversight? The more detail you get here, the more confident you can be in their consistency.

4. Can you meet our spec tolerances, and have you done it before?
Anyone can say yes. The right answer includes examples and data. Whether you're focused on durometer, pressure rating, or material compatibility, a good supplier can show proof.

5. What’s your average on-time delivery rate?
If a part arrives late, it doesn’t matter how good it is. Ask for delivery performance data or references from customers with similar needs.

6. What happens if something goes wrong?
This is where real suppliers stand out. Do they offer root cause analysis? Field support? Fast replacement? A clear answer here tells you how they’ll act under pressure.

At Brown Company, we welcome these kinds of questions. We believe transparency is the baseline—not a bonus.

If you're ready to take a more strategic approach to sourcing, download our supplier checklist. It's the same one we use to qualify our own partners.