MIL-DTL-55661C
Table IIa. Inspection level.
Visual and mechanical inspection
Lot size
Major
Minor 1/
1
to
8
all
5
9
to
15
all
5
16
to
25
20
5
26
to
50
20
5
51
to
90
20
7
91
to
150
20
11
151
to
280
20
13
281
to
500
47
16
501
to
1,200
47
19
1,201
to
3,200
53
23
3,201
to
10,000
68
29
10,001
to
35,000
77
35
35,001
to
150,000
96
40
150,001
to
500,000
119
40
500,001
to
over
143
40
1/ Samples may be pulled from either the production lot itself or from samples
pulled from the lot for major defect testing.
NOTES:
1. Major defect: A major defect is a defect, other than critical, that is likely to result in
failure, or to reduce materially the usability of the unit of product for its intended
purpose.
2. Minor defect: A minor defect is a defect that is not likely to reduce materially the
usability of the unit of product for its intended purpose, or is a departure from
established standards having little bearing on the effective use or operation of the unit.
4.5.1.3 Group B inspection. Group B inspection shall consist of the inspections specified in table III in
the order shown, and shall be made on sample units which have been subjected to and passed the Group
A inspection. Connectors having identical piece parts may be combined for lot purposes and shall be in
proportion to the quantity of each PIN numbered connector produced.
4.5.1.3.1 Group B sampling plan. A sample of parts shall be randomly selected in accordance with
table IIIa. If one or more defects are found, the lot shall be screened for that particular defect and defects
removed. After screening and removal of defects, a new sample of parts shall be randomly selected and
subjected to all tests in accordance with table IIIa. If one or more defects are found in the second sample,
the lot shall be rejected and shall not be supplied to this specification.
4.5.1.3.2 Disposition of sample units. Sample units which have passed all the Group B inspection may
be delivered on the contract or purchase order if the lot is accepted. Any connector deformed or
otherwise damaged during testing shall not be delivered on the contract or order.
7
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