MIL-DTL-25955A
4.6.5 Shock test (see 3.6.5). Connectors shall be subjected to transient deceleration forces as
specified. The forces shall be produced by securing the connectors to a sufficient mass and dropping the
assembly through such a height that, when decelerated by resilient impact, the required force is obtained.
One blow shall be applied in each of the three major axis. At least one blow shall be applied in the major
axis of the connector such that the resultant force tends to disengage the connector. Receptacles shall
be mounted on the shock device or carriage. A minimum of 8 inches of wire or cable shall be
unsupported behind the rear of each connector. A shock testing device, revised for connector mounting,
in accordance with MIL-STD-202 shall be satisfactory for this test.
4.6.6 Moisture resistance test (see 3.6.6). One half of each type, style, etc. of the connectors shall be
fully wired with AWG 20 wire. The remainder shall be fully wired with AWG 24 wire. The fully engaged,
grommeted, and wired connectors shall be subjected to a moisture resistance test in accordance with
MIL-STD-202, method 106 with the following exceptions and details:
a.
Step 7b, vibration, is not required.
b.
There shall be no drip loops in the wires.
c.
Wires shall be brought out of the chamber through vapor tight seals.
d.
There shall be no wire splices in the chamber.
e.
After the completion of step 6 of the final cycle and while the connectors are still subjected to high
humidity, the insulation resistance shall be measured.
4.6.7 Durability test (see 3.6.7). The specimens shall be subjected to the number of mating and
unmating cycles specified. The rate shall not exceed 600 cycles per hour. Twenty-five percent with a
minimum of three of the contacts shall be tested for contact retention as required following durability
cycling.
4.6.8 Contact retention test (see 3.6.8). Axial loads shall be applied to the contacts in connectors less
grommets in both directions separately. The rate of application shall be approximately 1 pound per
second.
4.6.8.1 Contact removal test (see 3.6.8.1). The contacts shall be inserted in and removed from normal
service position in connectors five times. An insertion tool with tip dimensions in accordance with figure 2
shall be employed. The force necessary to remove individual contacts from normal position on the fifth
removal shall be measured.
4.6.9 Corrosion test (see 3.6.9). Specimens shall be subjected to a salt spray test in accordance with
MIL-STD-202, method 101, test condition B. Immediately after exposure, the exterior surface of mated
connectors and all surfaces of other specimens shall be thoroughly washed with tap water. The
specimens shall then be dried in a circulating air oven at a temperature of 38° ±3°C (100° ±5°F) for a
period of 12 hours. The specimen shall then be removed and inspected.
4.6.10 Immersion test (see 3.6.10). Disengaged fully wired connectors with grommet in place shall be
immersed fully in the specified fluids for the required periods; at least one connector shall be immersed in
each fluid. After removal from the fluid, each connector shall remain for one hour in free air at room
condition. The connector shall then be engaged with a counterpart connector. After engagement, any
required test voltages shall be applied.
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