MIL-DTL-50648B
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 23 delay
bodies, 23 ignition device retainers, 21 units for ballistics, to be tested as indicated in table II, and 10 sets
of unassembled components (including explosive components) for visual and dimensional examination.
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 ignition device, propellant, or igniter lot after initial
production, 12 assembled delay elements from the first production lot thereafter shall be tested in
accordance with 4.7.5. The Government reserves the right to require new first article samples until such
time as an acceptable sample is submitted (see 6.3).
TABLE II. First article inspection.
Paragraph
Test
Sample size
Type of test
Requirement
Test
Destructive
Nondestructive
3.4.2
4.7.2
Protective finish
23 Delay bodies
X
-
23 Ignition device retainers
X
-
3.5.2
4.7.4
Vibration
12 (Fr. Ballistics sample)
-
X
3.6
4.7.5
Function tests
21
X
-
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 Temperature conditioning for ballistic test. The sample shall be temperature conditioned and
tested to determine compliance with 3.6.1.2. The sample for firing shall be conditioned to table III.
TABLE III. Temperature conditioning.
Temperature (° F)
Not vibrated
Vibrated
-60 to -70
3
4
65 to 75
3
4
195 to 205
3
4
4.4.3 First article failure. Failure of the sample to comply with the requirements of the drawings and
specifications shall result in first article sample disapproval.
4.5 Quality conformance inspection.
5
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