Your Suppliers Are Costing You More Than You Think! (And It’s Probably Not Just Scrap…)

For many businesses, supplied materials, piece parts and assemblies are the backbone of production. When supplier performance slips, the impact is immediate — late deliveries, line stoppages, rework, customer complaints and rising Cost of Poor Quality (COPQ).

The reality? Most supplier issues are not deliberate. They are usually the result of misalignment, weak controls, or unclear requirements.

Common Supplier Quality Issues

Supplied products aren’t always perfect. In-fact products supplied by others may miss the mark by a fair margin and a lot of the time the issues aren’t immediately obvious.  

Some of the most common issues we see include:

• 🔎 Dimensional non-conformance

• 📄 Drawing revisions not implemented

• 📦 Mixed batches or poor traceability

• 🧪 Inadequate material certification or test evidence

• 🔧 Process drift in machining, fabrication or assembly

• 📊 Capability not aligned to tolerance requirements

• 🚚 Damage due to inadequate packaging

• 📝 Incomplete First Article Inspection (FAI) submissions

Left unchecked, these issues quickly erode margin and customer confidence.

Can we afford a reduction in profit or revenue???

What’s Really Causing the Problem?

Supplier quality issues often stem from:

• Specifications not clearly communicated or understood

• Commercial pressure driving cost over control

• Infrequent supplier audits or oversight

• Poor change management

• Over-reliance on goods-in inspection as the “safety net”

• Lack of data-driven performance monitoring

It’s easy to become absorbed in day-to-day operations, firefighting the immediate issue rather than fixing the underlying cause. When that happens, problems don’t disappear — they resurface.

How often do the same supplier issues return, despite having “dealt with” them before?

Short-Term Actions

When issues arise, immediate action is critical. Identify and define the issue as clearly as possible. Now let’s contain the problem. That may involve:

• 100% inspection or tightened sampling

• On-site supplier visit to review process controls

• Controlled shipping and segregation of suspect stock

• Clear written containment plan with defined responsibilities

• Temporary increased communication and reporting

Containment protects the customer — but it doesn’t solve the root cause.

Long-Term Solutions

Supplier relationships are key. Simple transactional relationships can work in a lot of cases, but when high risk activities or products are involved, suppliers need to understand the partnership through regular engagement. What are we trying to achieve? And what are the key requirements to success?

Sustainable improvements may include:

• Deep-dive supplier audits focused on process capability and risk

• Clear technical communication of specifications and critical features

• Strengthened change control and revision management

• Supplier performance scorecards

• Enhanced goods-in inspection aligned to risk

• True root cause analysis — not symptom correction

In reality, we can’t run a suppliers business for them, but we can provide them with all the information and tools necessary to give us assurances that

How NI Quality Systems Ltd Can Help….

At NI Quality Systems Ltd, we work alongside businesses to strengthen supplier control without adding unnecessary bureaucracy.

We provide:

• 🔍 Deep-dive supplier audits focused on real process capability

• 🌍 Product inspection at supplier locations (Europe-wide)

• 📦 Enhancement of goods-in inspection processes

• 💬 Improved communication of specifications to reduce ambiguity

• 📉 Practical strategies to reduce COPQ through prevention, not firefighting

Our approach is direct, practical and tailored. We don’t believe in “copy and paste” quality systems — especially when it comes to supplier control.

Many organisations use continuous improvement tools such as 5 Whys, Fishbone diagrams, Pareto analysis, FMEA and Kaizen, and they can be highly effective when applied properly. We use these methodologies where they genuinely add value to the business. However, at the heart of every improvement activity is the simple but powerful Plan–Do–Check–Act (PDCA) cycle

If supplier performance is causing frustration, cost or risk in your business, it may be time to look beyond containment and focus on control at source.

If you need our help in doing this, we are just a phone call or email away.