When sourcing a manufacturing partner for wire harness assembly or cable assembly, certifications matter. Certifications help verify that a manufacturer follows documented quality processes, meets industry requirements, and can consistently deliver reliable products.
For industries like aerospace, automotive, medical, industrial automation, and defense, working with a certified cable & wire harness assembly company is often a requirement rather than a preference.
In this guide, we’ll explain the most important certifications in both cable assembly and wire harness assembly and why they matter when choosing a manufacturing partner.
Why Are Certifications Important in Cable & Wire Harness Assembly?
Certifications help ensure a cable & wire harness assembly manufacturer follows standardized processes for quality, documentation, inspection, and traceability.
Proper quality systems ensure:
- Product consistency
- Traceability
- Regulatory compliance
- Process control
A certified cable & wire harness assembly company demonstrates its commitment to quality, repeatability, and continuous improvement.
For customers, this can lead to:
- Fewer production issues
- Improved reliability
- Better long-term product performance
- Easier supplier qualification
- Reduced supply chain risk
Given the benefits of a certified partner, let’s break down each of the key certifications to look out for when choosing a cable assembly and/or wire harness assembly company.
What Is ISO 9001 Certification?
The International Organization for Standardization’s 9001 certification (ISO 9001) is the foundational quality management certification used across manufacturing industries worldwide.
For a cable & wire harness assembly company, an ISO 9001 certification means the company has established documented quality processes designed to improve consistency, efficiency, and customer satisfaction.
ISO 9001 requires companies to implement standardized processes for:
- Documentation control
- Corrective actions
- Continuous improvement
- Customer satisfaction
- And more
Many companies consider ISO 9001 the baseline certification for a qualified wire harness and cable assembly supplier. Since ISO 9001 is a general manufacturing standard, many industries require additional certifications built on top of it, which we will discuss next.
What Is IPC/WHMA-A-620?
The IPC/WHMA-A-620 standard is a set of the most important guidelines in the cable & wire harness assembly industry.
Developed by the Global Electronics Association (formerly IPC) and the Wire Harness Manufacturers Association, this standard defines the acceptability requirements for cable and wire harness assemblies.
IPC/WHMA-A-620 establishes workmanship standards for:
- Crimping
- Soldering
- Wire preparation
- Connector installation
- Insulation
- Harness routing
- Inspection criteria
- Testing requirements
For customers, working with a cable & wire harness assembly company trained to IPC/WHMA-A-620 standards helps improve consistency and reliability across assemblies.
Many OEMs require IPC/WHMA-A-620 compliance for suppliers producing:
- Industrial equipment
- Aerospace systems
- Medical devices
- Telecommunications equipment
- Control systems
This standard helps ensure assemblies are manufactured according to recognized industry best practices.
Now that we understand the generalized certifications and standards cable & wire harness assembly partners must follow, let’s learn more about the industry-specific certifications that are often paired with ISO 9001 and IPC/WHMA-A-620.
What Is AS9100 Certification in Aerospace Manufacturing?
AS9100 is a quality management standard designed specifically for aerospace manufacturers and suppliers. This standard is set by the International Aerospace Quality Group (IAQG).
For a cable & wire harness assembly company serving aerospace customers, AS9100 certification demonstrates the ability to meet strict aerospace requirements related to safety, traceability, and reliability.
AS9100 expands on ISO 9001 by adding requirements for:
- Product safety
- Risk management
- Configuration management
- Counterfeit part prevention
- Supply chain oversight
- Advanced traceability
AS9100 is commonly required for:
- Commercial aerospace
- Defense systems
- Aviation electronics
- Flight systems
- Satellite technologies
In aerospace applications, reliability is critical. Even small failures in a cable assembly or wire harness assembly can create major operational or safety issues, which is why AS9100 certification is so important.
What Is IATF 16949 Certification?
IATF 16949 is the primary quality management certification used in the automotive industry. It is set by the International Automotive Task Force (IATF).
Like the other certifications in this guide, IATF 16949 was developed to help automotive manufacturers improve quality, reduce defects, and maintain consistent production standards across complex supply chains.
For a cable & wire harness assembly company, an IATF 16949 certification demonstrates strong process control and the ability to support demanding automotive production environments.
Key areas covered by IATF 16949 include:
- Defect prevention
- Process optimization
- Statistical process control
- Continuous improvement
- Supplier management
- Risk reduction
IATF 16949 is especially important for:
- Electric vehicles
- Vehicle electronics
- Safety systems
- Power distribution systems
- Autonomous technologies
Automotive manufacturers rely on certified suppliers because even minor inconsistencies in a cable & wire harness assembly can impact vehicle performance, ultimately putting user safety at risk.
What Is ISO 13485 Certification for Medical Manufacturing?
Biomedical Engineering ISO 13485 is a quality management certification specifically designed for medical device manufacturers and suppliers. Like ISO 9001, it is set by ISO.
For a cable & wire harness assembly company serving the medical industry, ISO 13485 demonstrates the ability to meet strict regulatory and documentation requirements.
ISO 13485 focuses heavily on:
- Risk management
- Traceability
- Process validation
- Clean manufacturing practices
- Regulatory compliance
- Documentation control
Medical applications often require extremely high levels of precision and reliability because product failures can directly impact patient safety.
ISO 13485 certification is commonly required for manufacturers supporting:
- Diagnostic equipment
- Imaging equipment
- Patient monitoring devices
- Laboratory equipment
Choosing an ISO 13485-certified cable & wire harness assembly company can help medical device manufacturers maintain compliance and reduce production risks.
How Do Certifications Help Customers Choose the Right Cable Assembly or Wire Harness Assembly Manufacturer?
Certifications help customers evaluate whether a wire harness & cable assembly supplier has the systems and controls needed to support critical applications.
A certified cable & wire harness assembly company is more likely to provide:
- Consistent manufacturing quality
- Better process documentation
- Improved traceability
- Stronger inspection procedures
- Reduced defect rates
- More reliable production outcomes
For highly regulated industries, certifications also help simplify supplier approval and compliance requirements.
When evaluating a manufacturing partner, customers should ask:
- Which certifications does the company maintain?
- Are employees trained to IPC standards?
- Does the manufacturer support industry-specific compliance requirements?
- What testing and inspection processes are used?
- How does the company manage traceability and documentation?
These questions can help identify whether a supplier is equipped to support long-term production success.
Tip: When evaluating a supplier’s certifications, be sure to check the year the supplier was certified. This will help you ensure the cable & wire harness assembly partner is following the most up-to-date standards.
Why Work With a Certified Cable & Wire Harness Assembly Company?
Not all manufacturers maintain the same level of quality control, documentation, or process discipline.
Choosing a certified cable & wire harness assembly company helps reduce risk and improve confidence in the final product.
Whether you need a complex wire harness assembly, custom cable assembly, or full turnkey manufacturing support, certifications play an important role in ensuring consistent quality and long-term reliability. At PGF Technology Group, quality-driven manufacturing processes help support customers across aerospace, medical, industrial, automation, and other demanding industries.
Frequently Asked Questions About Cable & Wire Harness Assembly Certifications
What certifications should a cable & wire harness assembly company have?
The required certifications depend on the industries the company serves. Common certifications include ISO 9001, AS9100, IATF 16949, ISO 13485, and IPC/WHMA-A-620 training and compliance.
What is the difference between ISO 9001 and AS9100?
ISO 9001 is a general quality management standard used across industries, while AS9100 includes additional aerospace-specific requirements related to safety, traceability, and risk management.
Is IPC/WHMA-A-620 required for cable & wire harness assembly?
Many OEMs and regulated industries require manufacturers to follow IPC/WHMA-A-620 standards because they define accepted workmanship and inspection requirements for cable and wire harness assemblies.
Why is ISO 13485 important for medical cable assembly manufacturing?
ISO 13485 helps ensure manufacturers follow strict quality and regulatory processes required for medical devices and related assemblies.
Why does certification matter in cable assembly manufacturing?
Certifications help verify that a manufacturer follows controlled, repeatable processes designed to improve product quality, reliability, and compliance.