MIL-DTL-23351B
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. 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 VI, in the order
shown, and the sample shall be selected from inspection lots that have passed group A inspection.
TABLE VI. Group B inspection.
Requirement
Test method
Inspection
paragraph
paragraph
Bow
3.4
4.6.2
Twist
3.5
4.6.3
Squareness of cut
3.6
4.6.4
4.5.1.3.1 Sampling plan. (See 4.5.1.2.1).
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. Such lots shall be separate from new lots, and shall be
clearly identified as reinspected lots.
4.5.1.3.3 Disposition of sample units. Sample units that have passed all the group B inspection may be delivered
on the contract.
4.5.2 Periodic inspection. Periodic inspection shall consist of group C. Except where the results of these
inspections show noncompliance with the applicable requirements (see 4.5.2.1.4), delivery of products which have
passed groups A and B shall not be delayed pending the results of these periodic inspections.
4.5.2.1 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 that have passed the group
A and B inspections.
TABLE VII. Group C inspection.
Requirement
Test method
Inspection
paragraph
paragraph
Surface roughness
3.7
4.6.5
Scratches
3.8
4.6.6
4.5.2.1.1 Sampling plan. The first two lengths of the production lot shall be tested. Thereafter one out of each 25
lengths shall be tested.
4.5.2.1.2 Failures. If one or more sample units fail to pass group C inspection, the lot shall be considered to have
failed.
4.5.2.1.3 Disposition of sample units. Sample units that have been subjected to group C inspection shall not be
delivered on the contract.
4.5.2.1.4 Non-compliance. If a sample fails to pass group C inspection, the contractor shall take corrective action
on the materials or processes, or both, as warranted, and on all units of product which can be corrected and which
were manufactured under essentially the same materials and processes, and which are considered subject to the
same failure. Acceptance and shipment of the product shall be discontinued until corrective action, acceptable to the
Government, has been taken. After the corrective action has been taken, group C inspection shall be repeated on
additional sample units (all inspection, or the inspection which the original sample failed, at the option of the
Government). Groups A and B inspections may be reinstituted; however final acceptance and shipment shall be
withheld until the group C reinspection has shown that the corrective action was successful. In the event of failure
after reinspection, information concerning the failure shall be furnished to the cognizant inspection activity.
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