MIL-DTL-21097G
4.5.2.1.4 Noncompliance. If a sample fails to pass group B inspection, the manufacturer shall notify the qualifying
activity and the cognizant inspection activity of such failure and take corrective action on the materials or processes, or
both, as warranted, and on all units of product which can be corrected and which were manufactured under essentially
the same conditions, with essentially the same materials and processes, and which are considered subject to the same
failure. Acceptance and shipment of the product shall be discontinued until corrective action, acceptable to the
qualifying activity has been taken. After the corrective action has been taken, group B inspection shall be repeated on
additional sample units (all inspections, or the inspection which the original sample failed, at the option of the qualifying
activity). Group A inspection may be reinstituted; however, final acceptance and shipment shall be withheld until the
group B inspection has shown that the corrective action was successful. In the event of failure after reinspection,
information concerning the failure shall be made available to the cognizant qualifying activity.
4.6 Methods of inspection.
4.6.1 Visual and mechanical examination. Connector and contacts shall be inspected to verify that the design
requirements, construction, materials, dimensions, marking, and workmanship are in accordance with applicable
requirements (see 3.1, 3.3 through 3.4.4, 3.24 and 3.28). Standard inspection measuring tools shall be used.
4.6.1.1 Test methods. The following identified tests and test methods assure connector integrity within typical
operating conditions and applications. Alternate commercial industry standard test methods are allowed; however when
an alternate method is used, the qualifying activity must be notified prior to performance of the test. The test methods
described herein are proven methods and shall be the referee method in cases of dispute.
4.6.1.2 Interchangeability. Physical configuration and dimensional measurements shall meet the requirements of 3.5
4.6.2 Permeability (see 3.6). The permeability of the assembled connector shall be measured with an indicator in
accordance with ASTM A342/A342M.
4.6.3 Insulation resistance (see 3.14). Unmated connector assemblies shall be tested in accordance with test
procedure EIA-364-21. The following details and exceptions shall apply:
a. Points of measurement: Between individual contact pairs, and between all contacts and the body.
b. Electrification time: 1 minute.
4.6.4 Dielectric withstanding voltage (see 3.8). Unmated connectors shall be tested in accordance with test
procedure EIA-364-20. The following details and exceptions shall apply:
a. Special conditions: All contacts shall be subjected to the high potential test. They may be wired with
alternate series in contacts in a manner to test the high potential characteristics between adjacent not
opposing pairs of contacts. There shall be no insulated tubing used over the terminals during this test.
b. Magnitude of test voltage: Applicable value specified at sea level and per contact in table IV, applicable value
specified at altitude and per contact spacing in table IV for types CR and CS only.
c. Nature of potential: ac.
d. Duration of application of test voltage: 60 ±10 seconds after voltage requirements is attained. Voltage
applied shall be at a rate not exceeding 500 volts per second until test voltage is attained.
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