crimping, interconnecting cables, harnesses, and wiring - NASA

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Page 14 of 114 NASA-STD-8739.4 with Change 6 Figure 19-20. Stripped Wires Prior to Insertion .......................................................................... 86 Figure 19-21. Stripped Wire Bundle Prior to Insertion .............................................................. 86 Figure 19-22. Wires Crimped Within Contact ............................................................................ 86 Figure 19-23. Contact Trimmed and Deburred ........................................................................... 86 Figure 19-24. Contact Covered With Shrink Sleeving ................................................................ 86 Figure 19-25. End Type Splice .................................................................................................... 87 Figure 19-26. Parallel Type Splice .............................................................................................. 87 Figure 19-27. Butt Splice ............................................................................................................. 88 Figure 19-28. Butt Splice Prior to Wire Insertion........................................................................ 88 Figure 19-29. Butt Splice Prior to Crimp..................................................................................... 88 Figure 19-30. Properly Crimped Butt Splice ............................................................................... 88 Figure 19-31. Butt Splice with Shrink Sleeving .......................................................................... 89 Figure 19-32. Crimped Contact Outside Junction Device ........................................................... 89 Figure 19-33. Crimped Contacts Inserted Into Junction Device.................................................. 89 Figure A-1 - A-2. Wiring: Connectors, Cabling, and Harnessing - Wire Dress to Connectors 103 Figure A-3 - A-6. Wiring: Connectors, Cabling, and Harnessing - Stress Relief Shrinkable Sleeving on Solder Cups ........................................................................................ 104 Figure A-7 - A-10. Wiring: Connectors, Cabling, and Harnessing, Wire Preparation, Thermal Stripping ............................................................................................................... 105 Figure A-11 - A-14. Wire Preparation: Mechanical Stripping .................................................. 106 Figure A-15 - A-18. Wiring: Connectors, Cabling, and Harnessing, Wire Preparation, Thermal Stripping ............................................................................................................... 107 Figure A-19 - A-21. Wiring: Connectors, Cabling, and Harnessing, Wire Preparation, Tinning Stranded Conductors .............................................................................................. 108 Figure A-22 - A-24. Wiring: Connectors, Cabling, and Harnessing, - Installation of Straps.... 109 Figure A-25 - A-26. Crimps: Insulation Clearance ................................................................... 110 Figure A-27 - A-28. Crimps: Acceptable and Unacceptable ..................................................... 111 Figure A-29 - A-30. Crimps: Unacceptable ............................................................................... 112 Figure B-1. Illustration of Proper Trimback of Jacket to Isolate it from the Clamping System 111 Figure B-2. Broken Solder Joint Caused by Insufficient Solder Fill ......................................... 112 Figure B-3. Problem Point for Kynar Stress Relief Sleeving .................................................... 112
LIST OF TABLES Page 15 of 114 NASA-STD-8739.4 with Change 6 Table 7-1. Bend Radii for Completed Interconnecting Cable or Harness ................................... 36 Table 9-1. Spot Tie, Plastic Strap, and Stitch Spacing Dimensions ............................................ 41 Table 9-2. Distances From Connectors or Connector Accessories to Beginning of Harness Ties ................................................................................................................................. 43 Table 9-3. Selection Guide for Use of Polyolefin and Polyvinylidene Fluoride Sleeving .......... 48 Table 11-1. Shield Termination Control for Group Grounding ................................................... 57 Table 11-2. Shield Termination Control ...................................................................................... 60 Table 12-1. Crimp Tensile Strength ............................................................................................. 64 Table 13-1. Pull Force.................................................................................................................. 69 Table 13-2. Contact Retention Test Forces .................................................................................. 69 Table 17-1. Mating Torque Values for Coaxial Connectors ........................................................ 77 Table 19-1. Crimp Tensile Strength Values for Wire-in-Line Junction (i.e., Jiffy Junction) Devices..................................................................................................................... 90 Table 19-2. Contact Retention Values for Wire-in-Line Junction (i.e., Jiffy Junction) Devices 91
Page 1 and 2: NASA TECHNICAL STANDARD National Ae
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. Shield Terminations: (1) Shield t
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WIRE PREPARATION: MECHANICAL STRIPP
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FIGURE A-25 FIGURE A-26 CRIMPS: INS
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FIGURE A-29A CRIMPS: UNACCEPTABLE P
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crimping, interconnecting cables, harnesses, and wiring - NASA

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