At Principal Manufacturing Corporation, quality is embedded into every stage of production. From raw material inspection to final measurement, we maintain rigorous standards to support critical applications across the automotive, industrial, and OEM sectors.

Our facility is certified to both IATF 16949:2016 and ISO 14001:2015, meeting global benchmarks for automotive quality and environmental management. These certifications reflect a long-standing commitment to consistency, accountability, and continuous improvement.

We also maintain end-of-line testing procedures and documented inspection protocols to support traceability and reliability across part programs.

Tools That Support Precision

Our quality lab features state-of-the-art measuring equipment to validate dimensions, geometry, and surface features. This includes:

  • Contact and non-contact inspection systems
  • Digital measurement tools
  • Statistical process control (SPC) systems
  • Documentation and reporting capabilities tailored to customer requirements

All measurement activities are integrated into production workflows to reduce rework, shorten feedback loops, and confirm every part meets specification.

Built Into Every Process

From tooling through secondary operations, our team follows clearly defined procedures and real-time checks. We apply quality control across all services, including:

  • Fine blanking
  • Metal stamping manufacturing
  • CNC machining
  • Plastic injection overmolding
  • Automated assembly and finishing

We take pride in being a reliable supplier of ready-to-use parts, backed by documentation and supported by decades of experience.

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