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Direct part marks (DPMs) and their quality are critical for tracking and traceability efforts as well as maintaining compliance with government and industry regulations. Poorly marked DPMs can halt production, jeopardize compliance, and introduce defects into the manufacturing process. This whitepaper provides a clear, actionable roadmap for navigating the complex regulations and technical standards. What You’ll Learn Aerospace & Defense – Why MIL‑STD‑130 requires a “B” grade or higher for 2D Data Matrix codes, and how to achieve it. Automotive – How AIAG B‑17 sets the bar (Grade “C” minimum, “B” preferred) and what OEMs like Ford and GM expect. Medical Devices – FDA UDI (21 CFR Part 830) and EU MDR requirements, including direct marking of implantables and reusable surgical tools. The ISO TR 29158 (AIM DPM) Standard – The 7 quality parameters and how to fix common failures. Marking Methods Compared – Dot peen, laser, inkjet, chemical etching – durability, precision, cost, and when to use each.