crimping, interconnecting cables, harnesses, and wiring - NASA

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NASA-STD-8739.4 with Change 6punctured or slit to provide openings for breakout (Requirement). After installation, braidedsleeving shall be secured or treated in one of the following ways to eliminate fraying orunraveling (Requirement).Figure 9-7. Securing Fabric Braid Sleeving9.3.1 Braided sleeving may be secured by a spot tie or plastic cable strap. The end of the braidshall be tucked under and secured with a spot tie or plastic strap (Figure 9-7) (Requirement).9.3.2 The end of the braid may be secured by connector clamps, other hardware, or potting.9.3.3 The ends of glass braids may be bonded using an adhesive. Excessively frayed materialshall be trimmed away prior to application of the adhesive (Requirement). When the adhesive isdry, the braid shall be secured by spot tying or other means so that it does not slip on the wirebundle (Requirement).9.3.4 Polyamide (nylon) braids (for use on ground service equipment) may have their endssealed by use of a "hot knife" or similar instrument.9.4 Fabric Braid Directly Woven on Interconnecting Harness or CableFabric braids woven directly on interconnecting harnesses or cables may be loose or tight, asnecessary to produce the degree of flexibility required. The braid shall be smooth and shallprovide coverage that leaves no gaps through which the wires can be seen (Requirement). Nofrayed ends shall be visible (Requirement). All pigtails shall be secured (Requirement). Braidsapplied tightly shall not terminate so close to connectors that they stress wires attached to soldercups (Requirement). Spot ties, plastic straps, lacing, and other temporary holding means shall beremoved from wire bundles prior to braid application (Requirement). Flat tapes may be leftunder braid if the tape has a low profile. Typical braiding techniques are shown in Figures 9-8,9-9, and 9-10.Page 44 of 114
NASA-STD-8739.4 with Change 6Figure 9-8. Starting LockFigure 9-9. Forming Ending PigtailTRIM OFFPIGTAILFigure 9-10. Braiding at a Breakout or Y IntersectionPage 45 of 114
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crimping, interconnecting cables, harnesses, and wiring - NASA

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