MIL-DTL-5846D
4.2.2 Sampling plans and tests.
4.2.2.1 Sampling plan A. Unless otherwise specified by the procuring activity, for each
50,000 feet of wire for controlled inspection stocks on contract(s) or order(s), a total of
12 samples shall be selected at random from the shipping coils and reels. Not more than
three samples shall be selected from any one coil or reel if four or more coils or reels are
supplied. The number of samples for each test shall be as specified in the test methods.
The samples shall be subjected to the test listed below. Any number of contracts or orders
may be supplied on the basis of the results of one series of sampling tests provided that
all of the wire is of the same type and class, is part of a batch previously sampled, and is
submitted for shipment within 24 months after the sampling tests are conducted. If
identical insulation is used on a number of classes of wire that are manufactured and
submitted for test at substantially the same time, the inspector shall so select the samples
as to get at least three samples from each class of wire. Only one series of sampling tests
is required for each 50,000 feet total of the various classes of wire.
a. Individual inspection.
b. Temperature aging.
c. Heat resistance.
d. Flammability.
e. Solvent resistance.
4.2.2.2 Rejection and retest. When one sample selected from a production run fails to
meet the specification, no wire from which the sample was taken shall be accepted until
the extent and cause of failure are determined. This applies to all wire of the same batch
or lot for individual and sampling plan A tests.
4.2.2.3 Individual tests may continue. For operational reasons, individual tests may be
continued pending the investigation of a sampling test failure. But final acceptance of
items on hand or later produced shall not be made until it is determined that the wire
meets all the requirements of individual and sampling plan A tests. Additional sampling
tests shall be conducted. If a failure occurs during these tests, the sampling test shall
immediately revert to individual tests until the batch is tested.
4.2.2.4 Defects in items already accepted. The investigation of a test failure could
indicate that defects may exist in items already accepted. If so, the contractor shall fully
advise the procuring activity of all defects likely to be found and methods of correcting
them.
4.3. Methods of examination and test.
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