MIL-F-18327F
TABLE VII. Group A inspection.
Inspection
Requirement
Test
Sampling
paragraph
paragraph
procedure
Visual and mechanical inspection
(external) - - - - - - - - - - - - - - - - - - - - - -
See table
Seal 1/ 2/ - - - - - - - - - - - - - - - - - - - - - - -
VIII
Dielectric withstanding voltage - - - - - - - -
Insulation resistance - - - - - - - - - - - - - - -
Insertion loss (at reference frequency)- - -
1/ The seal test may be done in group A, or at the end of group B, using the group A sample size.
2/ Any filter which shows evidence of leakage may be given remedial treatment if evidence is submitted to
show that such remedial treatment is adequate and that all of the other filters in the lot have been given
similar remedial treatment where required.
TABLE VIII. C = 0 sampling plan.
Sample size
Lot size
Group A
Group B
2 to
3
100 percent
100 percent
4 to
13
100 percent
3
14 to
25
13
3
26 to
50
13
5
51 to
90
13
6
91 to
150
13
7
151 to
280
20
10
281 to
500
29
11
501 to 1,200
34
15
1,201 to 3,200
42
18
3,201 to 10,000
50
22
4.6.3 Group B inspection. Group B inspection shall consist of the inspections specified in table IX, in the order
shown, and shall be made on sample units which have been subjected to and have passed the group A inspection.
TABLE IX. Group B inspection.
Inspection
Requirement
Test
paragraph
paragraph
Discrimination - - - - - - - - - - - - - - - - - - -
Special characteristics - - - - - - - - - - - - -
Terminal impedance (when specified) - -
Stability at temperature extremes- - - - - -
4.6.3.1 Sampling plan. A sample of parts shall be randomly selected in accordance with table VIII. If one or more
defects are found, the lot shall be 100 percent rescreened for those quality characteristics found defective in the
sample and defects removed. After rescreening, and removal of defects, a new sample of parts shall be randomly
selected in accordance with table VIII. 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 passed all the group B inspections may be delivered
on the contract or purchase order, if the lot is accepted.
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