MIL-DTL-83503C
4.4.3.2 Sampling plan (Group C). Sampling shall be in accordance with table VI. For group C
inspection, connectors with the greatest number of contacts from each specification sheet, of qualified
connectors shall be selected at random from units produced within twelve months preceding initial
reporting date, and every thirty-six months thereafter. The manufacturer when necessary for inspection
purposes shall supply counterpart plugs or receptacles. The connectors shall be assembled to printed
wiring boards or to uniform lengths of flat cable in accordance with MIL-DTL-49055.
4.4.3.3 Failures. If one or more sample units fail to pass group C inspection, the entire lot shall be
considered to have failed.
4.4.3.4 Disposition of sample units. Sample units, which have been subjected to group C inspection,
shall not be delivered on the contract.
4.4.3.5 Noncompliance. If a sample fails to pass group C inspection, the manufacturer shall notify the
qualifying activity and the 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 are
manufactured 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 C
inspection shall be repeated on additional sample units (all tests and examinations, or the test which the
original sample failed, at the option of the qualifying activity). Groups A and B inspections may be
reinstituted; 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 inspection activity and the qualifying activity.
4.5 Materials inspection. Materials inspection shall consist of certification, supported by verifying data,
that the materials specified in table I, and on the specification sheets (see 3.1) and used in fabricating the
connectors are in accordance with the referenced specifications and requirements (see 3.5, 4.6.2, and
6.2).
4.6 Methods of inspection.
4.6.1 Test methods. The following identified tests and test methods assure connector integrity within
typical operating conditions and applications. Alternate commercial industry stand test methods are
allowed. When an alternate method is used, the qualifying activity must be notified prior to performance of
the tests. The test methods described herein are proven methods and shall be the referee method in
cases of dispute.
4.6.2 Visual and mechanical inspection. Contacts and connectors shall be examined to ensure
conformance with this specification and associated specification sheets. Continuous examination shall be
performed to assure compliance with the following requirements:
a.
Specification sheets (see 3.1).
b.
Design, construction and physical dimensions (see 3.4).
c.
d.
Marking (see 3.6).
Workmanship (see 3.7).
e.
4.6.3 Preconditioning (see 3.5.1). Before any environmental tests are conducted, the connectors shall
be coupled and uncoupled 3 times.
4.6.4 Insulation resistance (see 3.5.2). The unmated connectors shall be tested in accordance with test
procedure EIA-364-21.
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