MIL-DTL-641F
4.5.1.2.2 Rejected lots. If an inspection lot is rejected, the contractor may rework it to correct the defects, or
screen out the defective units, and resubmit for reinspection. Resubmitted lots shall be inspected using tightened
inspection and shall not thereafter be tendered for acceptance unless the former rejection or requirement of
correction is disclosed. Such lots shall be separate from new lots, and shall be clearly identified as reinspected
lots.
4.5.1.3 Group B inspection. Group B inspection shall consist of the inspections specified in table II, in the order
shown, and shall be made on sample units which have been subjected to and have passed the group A
inspection.
4.5.1.3.1 Sampling plan. The sampling plan shall be in accordance with MIL-STD-1916 for special inspection
level S-4. The sample size shall be based on the inspection lot size from which the sample was selected for
group A inspection. The AQL shall be 4.0 percent defective.
4.5.1.3.2 Rejected lots. If an inspection lot is rejected, the contractor may rework it to correct the defects, or
screen out the defective units, and resubmit for reinspection. Resubmitted lots shall be inspected using tightened
inspection and shall not thereafter be tendered for acceptance unless the former rejection or requirement of
correction is disclosed. Such lots shall be separate from new lots, and shall be clearly identified as reinspected
lots.
TABLE II. Group B inspection.
Inspection
Requirement
Test
paragraph
paragraph
Contact resistance - - - - - - - - - - - - - -
Insulation resistance- - - - - - - - - - - - -
Dielectric withstanding voltage- - - - - -
Insertion and withdrawal force- - - - - -
4.5.1.3.3 Disposition of sample units. Sample units which have passed all the group B inspection may be
delivered on the contract, if the lot is accepted and the sample units are still within specified electrical tolerances.
4.5.2 Verification of qualification inspection. Verification of qualification inspection shall consist of group C.
Except where the results of these inspections show noncompliance with the applicable requirements (see
4.5.2.1.4), delivery of products which have passed groups A and B shall not be delayed pending the results of
these verification of qualification inspections.
4.5.2.1 Group C inspection. Group C inspection shall consist of the inspections specified in table III, 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 inspections.
4.5.2.1.1 Sampling plan. Ten sample units of each basic type shall be selected at random from items
produced every 24- or 36-months, as applicable (see 4.4.4). The sample units shall be subdivided as specified
for each subgroup in table III.
4.5.2.1.2 Failures. If any sample units fail to pass group C inspection, the entire sample shall be considered to
have failed and if the contractor has been inspecting on a 36-month basis as permitted in 4.4.4, he shall revert to
a 24-month testing basis. He can return to a 36-month inspection basis by meeting requirements of 4.5.2.1.1.
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