MIL-DTL-25955A
3.6.2 Insulation resistance. The insulation resistance of unmated connectors when tested in
accordance with 4.6.2 shall be greater than 5000 megohms when measured separately between any two
contacts and between the shell and any contact.
3.6.3 Thermal shock. Unmated connectors while and after being tested in accordance with 4.6.3 and
subjected to cycles of the temperature extremes specified in table II, shall not crack or break and shall be
in accordance with 3.6.3.1.
TABLE II. Thermal shock cycling extremes.
°C
°F
Low
-55, +0 -3
-67
High
+125, +0 -3
+257
3.6.3.1 Dielectric withstanding voltage following thermal shock. Unmated connectors within 45 minutes
of being tested in accordance with 4.6.3 shall be in accordance with the sea level dielectric withstanding
voltage requirement of 3.6.1.
3.6.4 Vibration. Completely wired and mated connectors when tested in accordance with 4.6.4 shall
not crack or break, and there shall be no loosening of parts. Receptacles shall retain plugs in full
engagement during vibration. There shall be no interruption of electrical continuity. Connectors shall be
in accordance with 3.6.4.1.
3.6.4.1 Dielectric withstanding voltage following vibration. Following the vibration testing required by
3.6.4, connectors shall be in accordance with the sea level dielectric withstanding voltage requirement of
3.6.1.
3.6.5 Shock. Completely wired and engaged connectors while and after being tested in accordance
with 4.6.5 shall show no sign of damage. Deceleration force shall be 50 gravity units.
3.6.6 Moisture resistance. Completely wired, grommeted, and engaged connectors after being tested
in accordance with 4.6.6 and while still subjected to high relative humidity conditions shall comply with the
insulation resistance requirement of 3.6.2 except that the insulation resistance shall be not less than 100
megohms.
3.6.7 Durability. The specimens below after being tested in accordance with 4.6.7 and subjected to
500 cycles of engagement and disengagement shall show no mechanical defects and shall be in
accordance with 3.6.7.1 as specified.
a. Completely connector assemblies less coupling rings.
b. At least one mating pair of inserts containing counter part contacts of each size being inspected.
The inserts may be in shells or out of shells.
3.6.7.1 Contact retention following durability. The connector assemblies of 3.6.7a following durability
tests shall comply with the contact retention requirements of 3.6.8.
3.6.8 Contact retention. Snap-in contacts in connectors less grommets when tested in accordance
with 4.6.8 shall withstand an axial load in either direction of 8 pounds.
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