MIL-DTL-83513G
4.5.4 Mating and unmating force. Connectors shall be rigidly mounted in a manner to permit mating
and unmating of the counterpart connectors, and with instrumentation capable of measuring the specified
forces. Gradually increasing axial loads shall be applied until plugs and receptacles are fully mated (see
figure 1). Then the forces shall be applied to disengage the connectors. The forces shall be measured in
both directions and shall conform to the requirements specified in 3.5.2. No one connector half may be
used as a test fixture for more than 500 cycles of mating and unmating. Subject connector pairs to three
mate/unmate cycles before initial measurements are taken.
4.5.5 Contact retention. Connectors shall be tested in accordance with test procedure EIA-364-29.
The following details and exceptions shall apply:
a. Number of samples: Twenty percent, but not less than seven contacts of the test specimen shall
be tested.
b. Applied axial load: Approximately one pound per second until the load specified in 3.5.3 has
been reached. Maintain load for 5 seconds minimum.
Maximum allowable contact displacement during application of specified force and after removal
c.
of specified force: .005 inch.
d. When pin or socket contacts are tested, the load shall be applied by pulling on the pigtail. Wire
breakage outside of the connector is not a failure.
4.5.6 Dielectric withstanding voltage.
4.5.6.1 Sea level. Mated or unmated connectors shall be tested in accordance with test procedure
EIA-364-20. The applicable test voltage specified in table I shall be applied between all adjacent contacts
and between the shell and each peripheral contact of type M only. Requirements shall be as specified in
3.5.4. For group A inspection testing, voltage shall be applied for a minimum of 10 seconds.
4.5.6.2 Altitude. The connectors shall be tested in accordance with test procedure EIA-364-20, with
altitude pressure of 35.5 torr, at the simulated altitude of 70,000 feet. All other requirements are specified
in 4.5.6.1.
4.5.7 Insulation resistance. Mated connectors shall be tested in accordance with test procedure
EIA-364-21. Test voltage shall be 500 volts 10 percent initially, then reduced to 100 volts 10 percent
after humidity. The resistance shall be measured between 50 percent, but not less than four pairs of
adjacent contacts and between 50 percent, but not less than six contacts adjacent to the shell (type M
only). The contacts selected shall be those having the closest spacing between measurement points and
the measured resistance shall be as specified in 3.5.5.
4.5.8 Contact resistance. Twenty percent, but no less than seven contacts of the mated connectors
shall be tested. The potential drop of each mated pair of pins and sockets shall be measured after
temperature stabilization with the specified current flowing through the contacts at an ambient
temperature of 25C 3C (see 3.5.6). The applicable test circuit shall be as shown on figure 2, and
contacts shall be fully mated (see figure 1). For printed circuit connectors the voltage leads shall be
located at the extreme ends of the contacts. For crimp or solder type contacts that are mated to PC
connectors the voltage leads shall be located on the wire, at closest point to contact without touching
contact.
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