crimping, interconnecting cables, harnesses, and wiring - NASA

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NASA-STD-8739.4 with Change 6
(Requirement). Indents shall be symmetrical and centered on the crimp barrel (Requirement).
There shall be no exposed base metal or other damage (Requirement).
19.15.2 Installation. Crimp contacts are assembled to conductors outside of the connector (see
Figure 19-32) and are subsequently installed into the connector body (see Figure 19-33). When a
connector is properly assembled, contacts are captured inside the connector.
On terminal junctions and certain insertable crimp-contact connectors, contacts are not exposed
for push testing. Contacts shall be properly installed and retained (i.e., locked-in/seated) within
the cavities and withstand the axial (i.e., contact retention) loads specified in Table (19-2),
without dislodging or damaging the contact, wire sealing grommet, cavity, or the contact
retention mechanism (Requirement).
Contact
Barrel Size
Table 19-1. Crimp Tensile Strength Values for Wire-in-Line Junction
(i.e., Jiffy Junction) Devices
Wire Size
(AWG)
Base Conductor Material
w/Nickel Plating
Tensile Strength
(Pounds, Minimum)
Pin Contacts Socket Contacts
22 26 Copper 3 3
26 Copper Alloy 3 -
24 Copper 5 -
24 Copper Alloy 5 -
22 Copper 8 8
22 Copper Alloy 8 -
20 24 Copper 8 6
24 Copper Alloy 14.4 -
22 Copper 12.8 -
22 Copper Alloy 22.2 -
20 Copper 20.6 10
16 20 Copper 20.6 10
16 Copper 41.2 29
12 14 Copper 65.1 34
12 Copper 103.2 65
8 8 Copper 288 -