MIL-DTL-287J
4.6 Conformance inspection.
4.6.1 Inspection of product for delivery. Inspection of product for delivery shall consist of group A and group B
inspection.
4.6.1.1 Inspection lot. An inspection lot shall consist of all assemblies of the same military PIN produced under
essentially the same condition, and offered for inspection at one time.
4.6.1.2 Group A inspection. Group A inspection shall consist of the inspections specified in table III, in the order
shown.
TABLE III. Group A inspection.
Inspection
Requirement paragraph
Test method paragraph
Visual and mechanical
Insertion loss
Voltage standing wave ratio (VSWR)
Pressurization
4.6.1.2.1 Sampling plan. All units shall be subjected to group A inspection. No failures are allowed. If one or
more sample units fail, the inspection lot shall be considered to have failed.
4.6.1.2.2 Rejected lots (group A inspection). If an inspection lot is rejected, the contractor may rework it to
correct the defects or screen out the defective units, and resubmit for inspection. Such lots shall be separate from
new lots and shall be clearly identified as re-inspected lots.
4.6.1.3 Group B inspection. Group B inspection shall consist of the tests specified in table IV, in the order shown,
and shall be made on units which have been subjected to and have passed group A inspection.
TABLE IV. Group B inspection.
Test
Requirement paragraph
Method paragraph
Retention
Bending test
3.5.13
Flexure
3.5.14
Axial twist (applicable only to twistable type)
3.5.15
Repeated twist (applicable only to twistable
type one-way twisting)
4.6.1.3.1 Sampling plan (group B inspection). The sampling plan shall be as specified in table V.
TABLE V. Group B sampling plan.
Quantity
Units tested
1-5
0 1/
6 - 50
1
51 - 99
2
100 and greater
2%
1/ After three consecutive buys of five units or less over a
period of 18 months, at least one unit shall be subjected
to group B inspection on the fourth buy.
4.6.1.3.2 Rejected lots (group B inspection). If an inspection lot is rejected, the contractor may rework it to
correct the defects, or screen out the defective units, and resubmit for inspection. Such lots shall be separate from
new lots, and shall be clearly identified as re-inspected lots.
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