NASA-STD 8739.4A - Crimping, Interconnecting Cables, Harnesses, and Wiring - Change 2

Oct 24, 2026

Upload by miraaa_2004

NASA-STD 8739.4A with Change 2 establishes workmanship requirements for crimping and for interconnecting cables, harnesses, and wiring. It specifies quality and processing rules governing acceptable crimping practices, material constraints, and test expectations for compliant connections. The document’s change history updates references, revises acceptance criteria and procedures, and expands requirements for contamination control and applicable performance limits in vacuum or low-pressure conditions. It also adds structural content such as a dedicated chapter on splicing.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages101

Reading Time4 h 15 min

AccessFree to download

Document Title and Metadata

Document History Log

| | NASA TECHNICAL STANDARD | NASA-STD 8739.4A with Change 2 | | --- | --- | --- | | National Aeronautics and Space Administration Washington, DC 20546 | | Approved: 2016-06-30 Superseding NASA-STD-8739.4 With Change 6 | | WORKMANSHIP STANDARD FOR CRIMPING, INTERCONNECTING CABLES, HARNESSES, AND
WIRING | | | | Measurement System Identification:
Metric (English) | | | DOCUMENT HISTORY LOG | | Status | Document Revision | Approval Date | Description | | --- | --- | --- | --- | --- | | Baseline | | | 1998-02-08 | Initial Release | | Change | | 1 | 2006-01-27 | - Page iii: Update URL for accessing NASA Technical Standards. The correct URL is
[http://standards.nasa.gov/](http://standards.nasa.gov/)
- Page iii: Update references to NASA 5300 .4(3J-1) and NASA 5300 .4(3M) to NASA-STD-8739.1 and NASA-STD-8739.2 respectively.
- Page iv: Insert Revisions page and renumber Table of Contents accordingly.
- Para 2.1 Change citation for NHB 8060.1 to NASASTD-6001 and change citation for NHB 1700. 1(V1) to NPR 8715.3.
- Para 3.2 Delete NHB from Acronym List and Add NPR to acronym list
- Para 4.3 No. 4: Change sentence to “Crimping. Stranded wire shall be used for crimping. Crimping of solid wire is prohibited. Crimping of solder tinned stranded wire is prohibited.”
- Para 5.7: Change address for training center to: GSFC, Training Center, Code 300. 1, 7000 Columbia Gateway Dr. , Columbia, MD. 21046
- Para 6.8: Change sentence to read: “All materials used in vacuum or low pressure shall not release greater than 1.0 percent total mass loss (TML) and
0.1 percent collected volatile condensable material (CVCM) when tested in accordance with ASTM-E- 595.”
- Para 6.8: Change NHB 8060. 1” to “NASA-STD- 6001” in the second sentence.
- Para 7.3 No. 11 Change NHB 8060.1 to NASASTD-6001
- Para 9.7: Change tape “may be applied to bundle”to “shall be applied to bundle”.
- Para 14.1 Change NHB 1700.1 to NPR 8715.3
- Para 18.2 No. 6.c: For the Insulation Resistance (IR) Test, change “for a minimum of 1 minute, or as specified in the test procedure” to “until a stabilized reading is attained not to exceed 1 minute, or as specified in the test procedure.”
- Appendix C Update the address for submitting changes to NASA Technical Standards
(WHBIII) | | | Status | Document Revision | Approval Date | Description | | --- | --- | --- | --- | --- | | Change | | 2 | 2006-08-23 | - Page v: Insert Revisions page entries
- Page ix: Revise Table of Contents to reflect insertion of new Chapter 19 and renumbering of existing Chapter 19 to Chapter 20
- Page xi and xii: Revise list of Figures to reflect insertion of new figures as a part of the new Chapter 19
- Page xii: Revise List of Tables to reflect insertion of new tables as a part of the new Chapter 19
- Pages 19-1 through 19-14: Inserted new Chapter on Splicing
- Pages 20-1 through 20-10: Renumbered original Quality Assurance Provisions Chapter to accommodate the new Splicing Chapter
(WHBIII) | | Change | | 3 | 2006-09-05 | Correct page number formatting problem and add page numbers (no content changes)
(WBHIII) | | Change | | 4 | 2008-07-25 | Update references, add ‘requirement’ tags, andrevalidate
(JWL4) | | Change | | 5 | 2009-11-24 | Editorial corrections to paragraphs 6.4, 12.3.4.c, 13.7.3, 18.2.6. b, and footnote \#1 to Table 12-1. Addition of SMA TA note on cover and VCS note below.
(JWL4) | | Change | | 6 | 2011-03-29 | Editorial corrections to Foreword and paragraphs 9.5 and 15.1. Format Page numbers. Add reference to NASA-STD 8709.22 in paragraphs 2.1.2 and 3.2.
(JWL4) | | Revision | | A | 2016-06-30 | - Editorial corrections to adopt current NASA Standard format.
- Synchronized requirements with NASA-STD- 8739.6
- Added and removed documents from reference lists.
- Unused acronyms deleted.
- Corrected applicability statement.
- Supersede the training chapter with the current requirements foun

FAQs

What subject does NASA-STD 8739.4A with Change 2 cover?

It covers workmanship requirements for crimping and for interconnecting cables, harnesses, and wiring, including related processing and quality expectations.

What kinds of updates are listed in the change history?

The document history records revisions such as updated references, reworded requirements for crimping and insulation resistance testing, and added chapters or entries that affect table and figure numbering.

Are there requirements related to materials and vacuum/low-pressure performance?

Yes. The document includes constraints on total mass loss and collected volatile condensable material when materials are tested under vacuum or low pressure.

Oct 24, 2026

Upload by miraaa_2004