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|  MIL-R-19365D
TABLE V. Group A sampling plan.
Lot size
Sample size
2 to
13
100%
14 to
150
13
151 to
280
20
281 to
500
29
501 to
1,200
34
1,201 to
3,200
42
3,201 to 10,000
50
10,001 to 35,000
60
35,001 to 150,000
74
150,001 to 500,000
90
500,000 and over
102
4.6.3 Group B inspection. Group B inspection shall consist of the tests specified in table VI, in the
order shown. They shall be performed on sample units that have been subjected to and have passed the
group A inspection, unless the Government considered it more practical to select a separate sample from
the lot for group B inspection.
TABLE VI. Group B inspection. 1/
Test
Requirement
Method
Number of
paragraph
paragraph
samples
Temperature
3.9
4.7.4
Dielectric withstanding voltage
3.10
4.7.5
Insulation resistance
3.11
4.7.6
See 4.6.3.1
Thermal shock
3.13
4.7.8
Short time overload
3.14
4.7.9
1/ If the manufacturer can demonstrate that this test has been performed 5 consecutive
times with zero failures, the frequency of this test, with approval of the qualifying
activity, can be performed on an annual basis. If the design, material, construction or
processing of the part is changed, or if there are quality problems or failures, the
qualifying activity may require resumption of the original test.
4.6.3.1 Sampling plan. A sample of parts shall be randomly selected in accordance with table VII, if
one or more defects are found, the lot shall be rescreened and defects removed. After screening and
removal of defects, a new sample of parts shall be randomly selected in accordance with table VII, if one
or more defects are found in the second sample, the lot shall be rejected and shall not be supplied to this
specification.
4.6.3.2 Disposition of sample units. Sample units which have been subjected to group B inspection
shall not be delivered on the contract or order. When an inspection lot is rejected on group B inspection,
the supplier shall immediately investigate the cause of failure and take corrective action to assure that
subsequent lots do not contain the same defect or defects.
18
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