MIL-DTL-55235A
may be re-instituted; however, final acceptance and shipment shall be withheld until the Group C
inspection has shown that the corrective action was successful. In the event of failure after re-inspection,
information concerning the failure shall be furnished to the cognizant activity and the Contracting Officer.
4.5.4 Re-inspection of conforming Group B and C sample units. Unless otherwise specified, sample
units which have been subjected to and passed group B or group C inspection, or both, may be accepted
on the contract provided all damage is repaired and the sample units are re-subjected to and pass Group
A inspection.
4.6 Conformance inspection of preparation for delivery. Preparation for delivery shall be
inspected to determine conformance to the requirements of section 5.
4.7 Methods of examination and test. When mated pairs of connectors are specified, the test sample
shall consist of the connector under test with an appropriate mating connector. Unless otherwise
specified, all tests for adapters and receptacles shall be performed, mated with their associated mating
connectors. The following tests are the referee tests in cases of dispute. Alternate test methods may be
used with the approval of the preparing activity.
4.7.1 Visual and mechanical inspection. Connectors shall be inspected to verify that the materials,
construction, cable clamping, assembly instructions, outline and mounting dimensions, marking and
workmanship are in accordance with the applicable requirements (see 3.3, 3.4, 3.8, 3.9, 3.11, 3.12 and
3.23).
4.7.2 Inspection for interchangeability dimensions. The interchangeability dimensions of the male
and female connectors shall be gaged at the specific points indicated on Drawing SC-D-358720 and SC-
D-358721, to determine compliance with the interchangeability requirement of 3.10. When a listed
dimension is not within specified limits, it shall be considered a major defect.
4.7.3 Dielectric withstanding voltage. Connectors mated and assembled to their appropriate cables,
and adapters mated to a plug or jack, as applicable, assembled to its appropriate cable shall be tested in
accordance with method 301 of Standard MIL-STD-202. The test voltage shall be raised from zero to
1500 volts rms at the rate of 100 volts per second and held at that voltage for one minute applied
between the inner and outer conductors of the connector and between the center conductor and the braid
of the cable for the adapters (see 3.13).
4.7.4 Insulation resistance. Connectors mated and assembled to their appropriate cables, and
adapters mated to a plug, or jack, as applicable, assembled to its appropriate cable shall be tested in
accordance with test condition A of Method 302 of Standard MIL-STD-202 (see 3.14). Application of
voltage shall be between the center conductor and the outer shall of the mated connectors and between
the center conductor and braid of the cable for the adapters.
4.7.5 Contact resistance. Connectors shall be tested in accordance with Method 307 of Standard
MIL-STD-202. The following details shall apply:
(
a) The electrical resistance of the mated connector contacts shall be calculated by measuring
the potential drop across the mated contacts when carrying a current of 7.5 and 30
amperes in the inner and outer contacts, respectively (see 3.15).
(b) Before making the initial contact resistance measurement, the contacts shall be inserted
and withdrawn five times.
(c)
The connections to the contacts shall be soldered.
(d) The wire used for connecting the contacts to the driving circuit shall be of such physical
size as to insure not more than a 30ºC temperature rise when the specified current is
flowing in the circuit.
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