MIL-DTL-3607C
4.4.1.5.1.1 Subgroup 1. For this subgroup, six (6) connectors shall be selected from the first units
produced or first production lot. Thereafter, for each 500 connectors subsequently produced, piece parts
for one sample unit shall be selected.
4.4.1.5.1.1.1 Physical dimensions. To facilitate inspection of the physical dimensions, the un-assembled
sample units shall be divided into groups of identical piece parts. Inspection of the physical dimensions
shall then be performed on a group-by-group basis.
4.4.1.5.1.2 Subgroup 2. For this subgroup, six (6) connectors shall be selected from the first production
lot. For subsequent group C inspection one (1) connector shall be selected every 6 months or every
6,000 units whichever comes first.
4.4.1.5.1.3 Order of inspection within group C. Group C inspection shall be performed in an order which
is satisfactory to the Government.
TABLE IV. Group C inspection.
Inspection
Requirement
Inspection
paragraph
paragraph
Subgroup 1 (unassembled connectors)
Visual and mechanical examination
4.5.1
Design and construction
Physical dimensions1/
3.3
4.5.1
Gage tests for contacts
3.3.3
4.5.1.2
Subgroup 2 (assembled connectors)
Salt spray (corrosion)
3.6
4.5.4
1/ Only those dimensions related to piece parts (other than gage tests for contacts) shall be
checked.
4.4.1.5.2 Noncompliance. If one or more sample units fails to pass group C inspection, the lot shall be
considered to have failed. If a sample fails to pass group C inspection, the manufacturer shall notify the
contracting officer and the cognizant inspection activity of such failure and take corrective action on the
materials pr processes, or both, as warranted, and on all units of product which can be corrected and
which are manufactured under essentially the same materials and processes, and which are considered
subjected to the same failure. Acceptance and shipment of product shall be discontinued until corrective
action acceptable to the contracting officer 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 contracting officer). Groups A and B inspections 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.
4.4.1.5.3 Re-inspection of conforming group C sample units. Unless otherwise specified, sample units
which have been subjected to and passed group C inspection may be accepted on the contract provided
all damage is repaired and the sample units are re-subjected to and pass group A inspection.
4.4.1.5.4 Disposition of group C sample units. Unless otherwise specified, sample units which have
been subjected to and passed group C inspection may be delivered in the contract, provided sample units
meet requirements of 4.4.1.5.3.
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