MIL-DTL-83503C
TABLE IV. Lot and sample size.
Lot size
Sample size
1 to 50
5
51 to 90
7
91 to 150
11
151 to 280
13
281 to 500
16
501 to 1200
19
1201 to 3200
23
3201 to 10000
29
10001 and over
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4.4.2 Group B inspection. Group B inspection shall consist of the tests specified in table V, in the order
shown, and shall be made on sample units which have been subjected to and have passed the group A
inspection.
4.4.2.1 Sampling plan (Group B). Four connectors of each specification sheet shall be selected at
random from production. These inspections shall be performed at least once each 6 months for each
class but not more often than 3 months.
4.4.2.2 Preparation of sample units. All connector samples shall be assembled to uniform lengths of flat
cable in accordance with MIL-DTL-49055 or mounted to printed wiring boards. The conductor size or
printed wiring board thickness shall be as specified in the individual specification sheets (see 3.1).
4.4.2.3 Failures. No failures shall be allowed.
4.4.2.4 Rejected lots. If an inspection lot is rejected, the contractor may rework it to correct the defects,
or screen out the defective units, and resubmit for reinspection. Such lots shall be separate from new lots,
and shall be clearly identified as reinspected lots.
4.4.2.5 Disposition of sample units. Sample units, which have been subjected to group B inspection,
shall not be delivered on the contract.
TABLE V. Group B inspection.
Requirement
Method
Inspection
paragraph
paragraph
Subgroup I ( 2 samples)
Contact retention
Permeability (when applicable)
Insulation resistance
Contact resistance 1/
1/ If both contact resistance and low level circuit resistance are required, they
shall be performed on different contact positions. In no instance shall they be
performed on the same positions.
4.4.3 Periodic inspection. Periodic inspection shall consist of group C. Except where the results of
these inspections show noncompliance with the applicable requirements (see 6.3), delivery of products
which have passed groups A and B shall not be delayed pending the results of these periodic inspections.
4.4.3.1 Group C inspection. Group C inspection shall consist of the tests specified in table VI, in the
order shown. Group C inspection shall be made on sample units selected from inspection lots which have
passed the groups A and B inspection.
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