MIL-DTL-25955A
3.6.8.1 Contact removal. When tested in accordance with 4.6.8.1 and following tests required by 3.6.8,
the force necessary to remove a snap-in contact on the fifth removal of the contact from the insert shall
not be less than 5 pounds.
3.6.9 Corrosion. The specimens specified below after being tested in accordance with 4.6.9 shall show
no evidence of corrosion interfering with the engagement or disengagement of the specimens. There
shall not be exposure of basic metal. The applicable specimens shall be in accordance with 3.6.9.1 and
3.6.9.2 after exposure to the corrosion test.
a. Mated, wired, and grommet connectors.
b. Five sets of individual pins and sockets of each size being inspected.
c. The unmated inserts specified in 3.6.7b.
3.6.9.1 Dielectric withstanding voltage following corrosion. The engaged connectors of 3.6.9a shall be
in accordance with the applicable sea level dielectric withstanding voltage requirement of 3.6.1.
3.6.9.2 Contact resistance following corrosion. All specimens of 3.6.9a, b, and c shall be in
accordance with the contact resistance requirement of 3.6.13.
3.6.10 Immersion. Connectors when tested in accordance with 4.6.10, and after immersion for a
period of 20 hours in the fluids below, shall be in accordance with 3.6.10.1.
a. Aircraft petroleum base hydraulic fluid shall be in accordance with MIL-PRF-5606.
b. Aircraft turbine lubricating oil shall be in accordance with MIL-PRF-7808.
3.6.10.1 Dielectric withstanding voltage following immersion. Mated and fully assembled connectors
after immersion shall comply with the applicable sea level voltage requirement of 3.6.1 for a voltage
application period of 5 minutes.
3.6.11 Resistance to test prod damage. Socket contacts when tested in accordance with 4.6.11 and
subjected to a bending moment of 0.5 inch-pounds plus or minus 10 percent shall not be damaged or
bent and shall comply with 3.6.11.1.
3.6.11.1 Contact resistance following test prod damage. Contacts shall be in accordance with the
contact resistance requirement of 3.6.13.
3.6.12 Contact separation. Socket contacts in inserts which have been subjected to tests required by
3.6.11 when tested in accordance with 4.6.12 shall require forces for separation of test pins from the
sockets in accordance with table III.
TABLE III. Contact separation forces, ounces.
Minimum individual separation
0.75
Minimum average separation with minimum diameter pin
1.25
Maximum average separation with maximum diameter pin
8.0
3.6.13 Contact resistance. When tested in accordance with 4.6.13, the resistance of mated contacts
shall be such that the potential drop across the contacts at the specified test current shall be in
accordance with table IV.
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