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|  MIL-C-60872A
4.2 Classification of inspections. The inspection requirements specified herein are classified as follows:
a.
First article inspection (see 4.4)
b.
Quality conformance inspection (see 4.5)
4.3 Inspection conditions. Unless otherwise specified in the contract or purchase order (see 6.2),
inspection conditions shall be as follows:
a.
Temperature: Room ambient 20 to 25 C (68 to 77 F)
b.
Altitude: Sea level
c.
Humidity: 50 percent relative, maximum
d.
Atmospheric: 14.7 psia
4.4 First article inspection. At the beginning of regular production, the contractor shall submit a first
article sample to a Government approved facility for evaluation. The sample shall consist of 21 assembled
cartridges for ballistics testing including 12 for vibration tests, 5 assembled cartridges for sealant tests, 10 sets
of unassembled components for dimensional and visual examination, and the quantity specified in accordance
with 4.4.2, i.e., cartridges assembled without the igniter and propellant charge for primer sensitivity test. The
first article sample shall be manufactured using the same materials, equipment, processes, and procedures as
used in regular production. All parts and materials, including packaging and packing, shall be the same as
used for regular production and shall be obtained from the same source of supply. When it becomes necessary
to make a change in either the primer, propellant, or igniter lot after initial production, 12 assembled cartridges
from the first production lot thereafter shall be tested in accordance with 4.7.7. The Government reserves the
right to require new first article samples until such time as an acceptable sample is submitted (see 6.3).
4.4.1 Examination, tests, and facility. After provisional acceptance at source, the sample shall be
inspected for all requirements of the drawings and specifications at a Government laboratory or other such
facility specified in the contract (see 6.2).
4.4.2 Sample size for primer sensitivity. The number of cartridges assembled without igniter or
propellant to be submitted for primer sensitivity tests shall be in accordance with table II.
TABLE II. Primer sensitivity.
Lot size
Sample size
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