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APPROVED FOR PUBLIC RELEASE DISTRIBUTION IS UNLIMITED NASA TECHNICAL HANDBOOK NASA-HDBK-6003C National Aeronautics and Space Administration Approved: 06-20-2008 Washington, DC 20546-0001 Expiration Date: 06-19-2013 Superseding NASA-HDBK-6003B APPLICATION OF DATA MATRIX IDENTIFICATION SYMBOLS TO AEROSPACE PARTS USING DIRECT PART MARKING METHODS/TECHNIQUES MEASUREMENT SYSTEM IDENTIFICATION INCH-POUND/METRIC NASA-HDBK-6003C APPROVED FOR PUBLIC RELEASE DISTRIBUTION IS UNLIMITED 2 of 61 DOCUMENT HISTORY LOG Status Document Revision Approval Date Description Baseline 07-02-2001 Baseline Release Revision A 06-17-2002 Incorporates metric unit equivalents in parentheses beside all English measurement units Revision B 02-21-2006 Page 28, section Liquid metal jet (LMJ) process replaced by LENS Incorporates changes from DoD retrofit part marking development and direct part marking (DPM) flight verification tests Incorporates additional inputs in section (Dot Peen) Input into new template; made editorial changes Added Appendix A Revision C 06-20-2008 3.2: License Tag Number: Delete the last sentence in the definition that read: “As a minimum, the information should contain the manufacturers CAGE code followed by an asterisk (ASCII separator) and trace code (lot, member, or serial number).” This is obsolete language. NASA-HDBK-6003C APPROVED FOR PUBLIC RELEASE DISTRIBUTION IS UNLIMITED 3 of 61 FOREWORD This handbook is published by the National Aeronautics and Space Administration (NASA) as a guidance document that provides engineering information; lessons learned; possible options to address technical issues; classification of similar items, materials, or processes; interpretative direction and techniques; and any other type of guidance information that may help the government or its contractors in the design, construction, selection, management, support, or operation of systems, products, processes, or services. This handbook is approved for use by NASA Headquarters and NASA Centers, including Component Facilities. This handbook establishes uniform guidance for applying Data Matrix identification symbols to parts used on NASA programs/projects using direct part marking (DPM) methods and techniques. Requests for information, corrections, or additions to this handbook should be submitted via “Feedback” in the NASA Technical Standards System at http:/ Original Signed By _ _June 20, 2008_ Michael G. Ryschkewitsch Approval Date NASA Chief Engineer NASA-HDBK-6003C APPROVED FOR PUBLIC RELEASE DISTRIBUTION IS UNLIMITED 4 of 61 SECTION TABLE OF CONTENTS PAGE DOCUMENT HISTORY LOG . 2 FOREWORD. 3 TABLE OF CONTENTS. 4 LIST OF FIGURES . 5 LIST OF TABLES. 6 1. SCOPE. 7 1.1 Purpose. 7 1.2 Applicability . 7 2. REFERENCE DOCUMENTS. 8 2.1 Government Documents . 8 2.2 Non-Government Documents. 8 3. ACRONYMS AND DEFINITIONS. 9 3.1 Acronyms. 9 3.2 Definitions. 10 4. GUIDANCE. 15 4.1 Part Tracking System Advancements. 15 4.2 Marking Methods. 16 4.3 Background. 56 4.4 Key Word Listing. 58 APPENDIX A MISSE PROGRAM INFORMATION. 59 NASA-HDBK-6003C APPROVED FOR PUBLIC RELEASE DISTRIBUTION IS UNLIMITED 5 of 61 LIST OF FIGURES Figure Title Page 1 Preferred Mold Profile. 18 2 Preferred Cell Spacing. 19 3 Laser Cutting Pattern Used to Cut Symbol Data Cells into Sand-Cast Mold. 20 4 Cross Section of Sand-Cast Symbol Designed to Provide Artificial Contrast for Successful Decoding. 20 5 Photograph of Sand-Cast Marking. 21 6 Unacceptable Ink-jet Markings . 22 7 Material Fused to a Surface Using the Laser Bonding Process. 23 8 Unacceptable Laser Bonding Markings . 24 9 Schematic Illustration of the LENS Process . 25 10 Spherical Mold Profile . 26 11 Camera Image of Spherical Profile . 26 12 Direct Part Marking Using LENS (A Molybdenum Disk Marked with Stainless-Steel Raised Lettering). 27 13 Data Matrix System Stencil Structure. 29 14 Dot-peen Patterns Used to Create Individual Data Cells . 30 15 Preferred Stylus-to-Target Configuration. 31 16 Preferred Dot-peen Stylus Configuration. 32 17 Acceptable Dot Size Range Using 120 Stylus with 0.005-in. (0.127 mm) Radius. 34 18 Acceptable Dot Size Range Using 120 Stylus with 0.01-in. (0.25 mm) Radius. 35 NASA-HDBK-6003C APPROVED FOR PUBLIC RELEASE DISTRIBUTION IS UNLIMITED 6 of 61 LIST OF FIGURES, continued Figure Title Page 19 Dot Size Tolerance. 36 20 Proper Dot Peen Spacing. 37 21 Examples of Dot Peen Spacing. 37 22 Row and Column Misalignment. 38 23 Improper Dot Marking Conditions. 39 24 Center Offset Marking Error and Overlapping Data Cells. 39 25 Marking Error with Overlapping Data Cells . 39 26 Dot Peen Marking With and Without Proper Illumination. 40 27 Cloth Label Produced Using Fabric-weaving Technique. 44 28 Laser Light Wavelengths. 45 29 2-D Markings Applied to the Head of a Straight Pin Using an Ar-F Excimer Laser. 46 30 Marking Applied to a Surface Using the Laser Coloration Process. 48 31 Laser Etching Applied Directly to a Surface (A) and to Surface Coating (B

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