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|  MIL-O-81151A(OS)
prior to the approval of the preproduction sample, shall be at the
supplier's risk.
4.3.2 Lot size, Unless otherwise specified in the contract or
order, each shipment of units of product shall be a separate "inspec-
tion lot" and may differ from the quantity specified in the total order
or contract. In any event, all units of a single "inspection lot" shall
be made to the same design, with the same materials and manufacturing
techniques, and shall be part of one continuous production run.
4.3.3 Periodic production samples. From each succeeding lot or grand
lot of 300 or less that have passed the quality conformance inspection of
4.4, a random sample of five oscillators will be selected for submission
to an activity designated by the procuring activity to determine com-
pliance of the samples with the requirements of the contract, specification,
and drawings. The oscillators shall be considered satisfactory if they
meet all specification and pertinent drawings requirements and withstand
the tests specified in 4.4 and 4.5. Failure of the periodic production
sample to comply with these requirements will result in the rejection of
the lot, as determined by the procuring activity.
4.4 Quality conformance inspections. Each oscillator delivered under
contract shall be su-ejected to the following tests and examination. Failure
to satisfactorily pass any test specified herein shall be considered cause
for rejection.
4.4.1 Test conditions. Unless otherwise specified, the oscillator sub-
assembly shall be subjected to quality conformance tests under the following
conditions:
4.4.1.1 Temperature. Room ambient 65 degrees F to 95 degrees F (18.5
degrees C to 35 degrees C).
4.4.1.2 Altitude.
Normal ground.
4.4.1.3 Vibration.
None.
4.4.1.4 Humidity.
Room ambient to 95 percent relative maximum.
4,4.2 Test and inspection equipment and facilities. The manufacturer
shall furnish and maintain all necessary test equipment, facilities and
provide personnel for performing all quality conformance tests. The test
equipment shall be adequate in quantity, and when definite requirements are
not specified they shall be of sufficient accuracy and quality to permit
performance of the required quality conformance tests.
4.4,3 Test Equipment.
The following items of test equipment are required
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