MIL-PRF-55339C
4.4.1.3.1 Group B sampling plan. A sample of parts shall be randomly selected in accordance with
table VI. 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 V. If one or more defects are found in the
second sample, the lot shall be rejected and shall not be supplied to this specification.
TABLE V. Group B Inspection.
Inspection
Requirement
Test method
paragraph
paragraph
Center contact retention
Force to engage/disengage
Coupling proof torque (threaded adapters)
Force to engage/disengage (threaded adapters)
Mating characteristics
Permeability (not applicable to hermetic-sealed adapters
or connector hardware)
Insulation resistance
VSWR
Contact resistance (center and outer contacts)
TABLE VI. Group B Sampling Plan.
Lot size
Sample
VSWR sample size
size
1
to
4
All
1
5
to
15
5
1
16
to
90
5
3
91
to
150
11
3
151
to
280
13
3
281
to
500
16
3
501
to 1,200
19
5
1,201
to 3,200
23
5
3,201
to 10,000
29
5
10,001
to 35,000
35
5
35,001
and over
40
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4.4.1.3.2 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 adapter deformed or
otherwise damaged during testing shall not be delivered on the contract or order.
4.4.2 Periodic inspection. Periodic inspection shall consist of group C. Except where the results of
these inspections show noncompliance with the applicable requirements (see 4.4.2.1.4), delivery of
products which have passed groups A and B shall not be delayed pending the results of these
periodic inspections.
4.4.2.1 Group C inspection. Group C inspection shall consist of the inspections specified in table
VII, 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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