MIL-DTL-50375B
4.3 Inspection conditions. Unless otherwise specified (see 6.2), all inspections shall be performed
under the following conditions:
Temperature: room ambient (68° to 77°F)
a.
b.
Altitude: sea level
c.
Humidity: 50 percent relative, maximum
d.
Atmospheric pressure: 14.7 psia
4.4 First article inspection. At the beginning of regular production, the contractor shall submit an
initial production sample to a Government approved facility for evaluation. The sample shall consist of
five metal parts assemblies, and nine sets of unassembled parts. The sample shall be manufactured in the
same manner, using the same materials, equipment, processes, and procedures as used in regular
production. All parts and materials, including packaging and packing, must be the same as will be used for
regular production and shall be obtained from the same source of supply. After inspection and provisional
acceptance at source, the first article sample shall be inspected for all requirements of the drawings and
specifications. The Government reserves the right to require new first article samples until such time as an
acceptable sample is submitted (see 6.3).
4.5 Quality conformance inspection.
4.5.1 Lot.
4.5.1.1 Submission of product. Unless otherwise specified by the contracting activity, formation,
and identification of lots shall be in accordance with ASQ Z1.4.
4.5.1.2 Size of lot. The production lot size shall be as specified in the contract (see 6.2).
4.5.2 Examination. One hundred percent examination shall be performed for all critical defects.
Examination for major and minor defects shall be performed in accordance with the classification of
defects. Four power (4x) magnification may be used for inspection of such defects as burr and foreign
matter. When compliance with the applicable requirement is in doubt as a result of visual examination, the
characteristic shall be measured or gaged to determine acceptability. All nonconforming material shall be
rejected.
4.5.2.1 Body, Male, Drawing 10551448, covering a detail of Drawing 10551447.
Characteristics
Defect
Method of Inspection
Critical
1
Metal defective
Visual
Major
101
Pitch diameter of small external thread, min
Gage
102
Major diameter of small external thread, min
Gage
103
Pitch diameter of large external thread, min
Gage
104
Major diameter of large external thread, min
Gage
4
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