MIL-DTL-13169E
TABLE IV. Group C inspection.
Inspection
Requirement
Verification
Aged (oxygen bomb):
1/
Tensile strength
1/
Elongation
Low temperature:
2/
Cold tension recovery
2/
Cold bend
1/ Six specimens from the first lot presented for conformance inspection,
and then six specimens from each 100,000 feet produced.
2/ Three specimens from the first lot presented for conformance inspection,
and then three specimens from each 100,000 feet produced.
4.2.1 Inspection lot. Unless otherwise specified (see 6.2), an inspection lot shall consist of all wire of
the same Part or Identifying Number (PIN), produced under essentially the same conditions on the same
machine, that is presented for inspection and shipment at one time.
4.2.2 Unit of product. The unit of product for determining lot size for sampling shall be the quantity of
wire offered for inspection on one coil, one reel, or one spool, as applicable.
4.2.3 Specimen length. Specimens for groups A, B, and C inspections shall be of the length
specified in the applicable test method.
4.2.4 Group A inspection. Group A inspection shall consist of the inspections specified in table II and
shall be performed on each lot of wire acquired under the specification. Group A inspections may be
performed at an appropriate stage of the manufacturing operation rather than on the finished wire.
4.2.5 Group B inspection. Group B inspection shall consist of the inspections specified in table III.
Group B inspection shall normally be performed on sample units that have been subjected to and have
passed the group A inspection.
4.2.6 Sampling. A random sample shall be selected from the lot. The sample size shall be based on
the inspection lot size from which the sample was selected for group B inspection. Sampling inspection
shall be in accordance with table V.
TABLE V. Inspection sample.
Inspection lot
Sample size
1/
size
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
4.2.7 Group C inspection. Group C inspection shall consist of the inspections specified in
table IV. Group C inspection shall normally be performed on sample units that have been subjected to
and have passed group A and B inspections.
5
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