MIL-DTL-13276C
TABLE I. Inspection sample.
Inspection lot
Sample size
size 1/
1
1
2 to 8
2
9 to 90
3
91 to 150
12
151 to 280
19
281 to 500
21
501 to 1,200
27
1,201 to 3,200
36
3,201 to 10,000
38
10,001 to 35,000
46
1/ Lot size is based on the number of
units of product
4.4.3 Rejected lot. Failure of any sample to pass any inspection shall constitute a failure of the lot. If
an inspection lot is rejected, the contractor may rework the lot to correct the defects or screen out the
defective units, and resubmit the lot for re-inspection. Such lots shall be separated from new lots and
shall be identified as re-inspected lots (see 4.4.4).
4.4.4 Noncompliance. If a sample fails to pass any inspection, the contractor shall notify the
cognizant inspection activity of such failure and take corrective action on the materials or processes or
both, as warranted, on all units of the product. Acceptance and shipment of the product shall be
discontinued until corrective action has been taken. After the corrective action has been taken, the
conformance inspection shall be repeated on replacement articles. (This includes all tests and
examinations, or only the test that the original sample failed, at the option of the cognizant inspection
activity.) Final acceptance and shipment shall be withheld until inspection has shown that the corrective
action was successful. In the event of failure after re-inspection, information concerning the failure shall
be provided to the cognizant inspection activity.
4.4.5 Group A inspection. This inspection, including sampling, shall consist of visual and
dimensional examinations (see 4.5) to determine compliance with the requirements as specified in 3.2
4.4.6 Group B inspection. This inspection, including sampling, shall consist of the tests and
4.5 Visual and dimensional inspection. Strands and completed wire shall be inspected to verify that
the materials and workmanship comply with this specification.
4.5.1 Construction and lay. Construction and lay shall be determined by physical examination and
measurement of the complete wire.
4.6 Breaking strength and elongation. Breaking strength and elongation shall be made on a tensile
strength machine, preferably of the pendulum type. Breaking strength test shall be made after stranding,
on the completed wire. The speed shall be not more than 3 inches per minute. Care shall be taken to
insure that strands in the stranded wire are evenly gripped during testing. (Successful testing of stranded
wire for tensile properties requires an adequate means of gripping the ends of the test specimen. Various
means are available, such as a long tube or socket into which the wire may be soldered, or in which, after
insertion, the wires may be swaged or pressed without serious distortion. Ordinary jaws or clamping
4
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