MIL-DTL-83503C
3.4.2.1 Contact arrangements. Contact arrangements in inserts shall be as specified (see 3.1).
3.4.3 Interchangeability. The mated connectors and individual plugs and receptacles having the same
PIN shall be directly and completely interchangeable with each other with respect to installation and
performance, as specified herein, and the applicable specification sheet (see 3.1).
3.4.4 Polarization. The polarization of connectors shall be accomplished by a mechanical or visual
method that precludes mating in more than one position. The polarization shall be accomplished prior to
the electrical engagement of the contacts.
3.4.5 Cable tension relief. When applicable, the connectors shall incorporate suitable means for
preventing the forces applied to the conductors from acting directly on the contacts (see 3.1).
3.4.6 Screw threads. Screw threads shall be in accordance with FED-STD-H28.
3.5 Performance. The connectors shall be wired and mated, unless otherwise specified, when
subjected to the applicable environments and tests specified.
3.5.1 Preconditioning. Mating connectors shall be preconditioned as specified in 4.6.3 before any
performance testing.
3.5.2 Insulation resistance. When the unmated connectors are tested as specified in 4.6.4, the initial
insulation resistance shall be greater than 5,000 megohms. Insulation resistance following exposure shall
not be less than 1,000 megohms.
3.5.3 Withstanding voltage. When the connectors are tested as specified in 4.6.5, there shall be no
evidence of breakdown, arcing, or damage.
3.5.4 Cable retention (flat-cable only). When connectors are tested as specified in 4.6.6, they shall
withstand the minimum applied force without mechanical damage.
3.5.5 Vibration. When connectors are tested as specified in 4.6.7, there shall be no evidence of
loosening of parts, cracks, or breaks, and no loss in continuity greater than 1 microsecond.
3.5.6 Low level contact resistance. When connectors are tested as specified in 4.6.8, the resistance
shall not exceed 50 milliohms.
3.5.7 Salt spray (corrosion) (unmated). When connectors are tested as specified in 4.6.9, there shall
not be sufficient corrosion to interfere with mating or unmating or cause exposure of base metal of plated
parts. There shall be no evidence of deterioration that will affect their operation. After exposure, the
connectors shall meet the requirements of withstanding voltage and contact resistance as specified in
3.5.8 Contact retention (removable contacts only). When connectors are tested as specified in 4.6.10,
there shall be no resulting damage to the contact, connector insert, housing, or contact retention system.
3.5.9 Connector-cable flexing (flat cable only). When connectors are tested as specified in 4.6.11, there
shall be no discontinuity of 1 microsecond or greater during the test. Following the test, the requirements
of withstanding voltage (sea level) specified in 3.5.3, shall be met and there shall be no flaws or damage.
3.5.10 Contact resistance. When connectors are tested as specified in 4.6.12, the resistance shall not
exceed the value specified (see 3.1).
3.5.11 Temperature cycling. When connectors are tested as specified in 4.6.13, there shall be no
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