MIL-DTL-26500G
4.6.19.1 Contact retention (group B). Each contact retention mechanism in the connector shall
be subjected to an axial load as shown in table V. Testing shall be in accordance with test procedure
EIA-364-29. Simulated contacts may be used. Failure of the retention mechanism to retain the contact
or simulated contact in its position shall be cause for rejection.
4.6.20 Altitude immersion (see 3.24). Mated connectors shall be immersed in a container of water at
approximately 20°C and placed in a chamber. Wire ends opposite the connector, shall be terminated
within the altitude chamber, exposed to the chamber atmosphere but no submerged. The exposed wire
ends shall not be sealed. Five percent salt by weight shall be added to make the water conductive. The
chamber pressure shall be reduced to approximately 1 inch of mercury and maintained for 30 minutes.
The chamber pressure shall then be returned to atmospheric pressure in not more than 1 minute. While
the connectors are still submerged, insulation resistance (see 4.6.13) measurements shall be performed.
This shall constitute one cycle. Two additional environmental cycles shall be run. At the end of the third
cycle, the insulation resistance measurements performed at the end of the first cycle shall be repeated. A
dielectric withstanding test voltage (see 4.6.8) shall be applied between the same points as those used
for insulation resistance measurements. The voltage shall be applied while the connectors are still
submerged and at atmospheric pressure.
4.6.21 Fluid immersion (classes R, G, E, and K) (see 3.25). The unmated connectors shall be
immersed in the following fluids for the time indicated:
a. Half of the samples in petroleum base hydraulic fluid conforming to MIL-PRF-5606 for 20 hours.
b. Half of the samples in aviation lubricating oil conforming to MIL-PRF-23699 for 20 hours.
Upon removal from the fluid, the connectors shall be placed in a position to allow the fluid to drain from
the mating insert face and remain in free air at room temperature for 1 hour. The connectors shall then
be mated by hand.
4.6.21.1 Fluid immersion (class F) (see 3.25.1). Connectors in group III of table VI shall be divided
equally into seven subgroups and tested as specified in table XII. Each subgroup shall contain
connectors wired with the smallest and largest insulation diameter wires as described in 4.3.2. After
testing in accordance with table XII, the connectors shall be visually (no magnification) inspected for
cracks or tears and mated by hand.
4.6.22 Contact resistance (see 3.26). Contacts of mated connectors shall be tested in accordance with
SAE-AS39029.
25
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business