MIL-DTL-9177C
e. Final measurements After completion of step 6 of the final cycle, and not sooner than 1/2-hour
nor later than 3 hours after the sample connectors have been removed from the chamber, the
insulation resistance shall be measured as specified in 4.6.4. The connectors shall then be
conditioned at a relative humidity of 50 ± 5 percent for a period of 24 hours, after which the contact
resistance, insulation resistance, and dielectric withstanding voltage shall be measured as specified
4.6.11 Vibration (see 3.6.10). Connectors shall be tested in accordance with method 204 of MIL-STD-
202. The following details and exceptions shall apply:
a. Test condition number A.
b. Method of mounting Connectors shall be mounted with their axes in a horizontal plane.
c. Mating connector Test connectors shall be mated to the approved mating connector and shall
remain mated throughout the test. Each connector tested shall have a 3-foot length of cord, of the
type usually used with the connector, attached and hanging free.
d. Direction of motion Along the axis of the connector and then perpendicular to the axis of the
connector.
e. Measurements after vibration The contact resistance shall be measured as specified in 4.6.3.
f. Continuity shall be monitored during the test with a detector capable of detecting interruption of 1
microsecond or longer, or as specified with at least 100 milliamperes dc flowing through each set of
contacts.
4.6.12 Shock (specified pulse) (see 3.6.11). Connectors shall be tested in accordance with method 213
of MIL-STD-202. The following details shall apply:
a.
Test condition letter H (75 G's).
b.
6 blows in 3 planes (total 18 blows).
c.
Mounting Connectors shall be mounted on rigid test plate and tested in vertical position.
d.
The test shall then be repeated with the connectors mounted on a horizontal plate.
e.
Continuity shall be monitored during the test with a detector capable of detecting interruption of 1
microsecond or longer, or as specified with at least 100 milliamperes dc flowing through each set of
contacts.
f.
Measurement after test The contact resistance shall be measured as specified in 4.6.3.
4.6.13 Salt spray (corrosion) (see 3.6.12). Connectors shall be tested in accordance with method 101 of
MIL-STD-202. The following details shall apply:
a. Test condition letter B.
b. Measurement after test Contact resistance shall be measured as specified in 4.6.3.
c. Unless otherwise specified, 5 percent salt solution.
4.6.14 Torque (unless otherwise specified, see 3.1) (see 3.6.13). With the sleeve of the connector held
rigid, a twisting force of 2 pound-inches shall be applied for at least 1 minute to the tip of the connector
assembly in a direction tending to loosen the tip. On three-element connectors having a dead collar
between the tip and the ring, a twisting force of 1-1/2 pound-inches shall also be applied to the dead
collar, in a direction tending to loosen it from the assembly.
4.6.15 Controlled drop (see 3.6.14). With the connector in the horizontal position each contact shall be
subjected to the impact of a 0.75 ounce (minimum) brass weight dropped from a vertical distance of 6 feet
(minimum). The weight shall be dropped through a tube 6 feet (minimum) long having an internal
diameter of 7/16 ± 1/16 inch (11.11 ± 1.59 mm). Each contact shall be subjected to 3 consecutive blows
with the connector being rotated 120° ± 10° between each blow.
4.6.16 Stack assembly (see 3.6.15). With the connector in the horizontal position, the connector shall be
subjected to a static load of 8 pounds (minimum), on the number one contact, for a minimum period of 24
hours.
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