MIL-DTL-12211G
3.9 Workmanship. Switches shall be processed in such a manner as to be uniform in quality and shall
be free from other defects that will affect life, serviceability, or appearance (see 4.7.2).
4. VERIFICATION
4.1 Classification of inspections:
a. Qualification inspection (see 4.3).
b. Conformance inspections (see 4.4).
Examination (see 4.4.2).
(1)
Tests (see 4.4.3).
(2)
4.2 Test equipment and inspection facilities. The manufacturer shall establish and maintain a
calibration system in accordance with ANSI/NCSL Z540-1, ISO 10012-1, or equivalent system as
approved by the qualifying activity.
4.3 Inspection conditions and precautions.
4.3.1 Inspection conditions. Unless otherwise specified (see 6.2), all inspections shall be conducted
under the following conditions:
a. Air temperature 77F + 15F (25C + 80C).
b. Barometric pressure 28.5 + 2, - 3 inches mercury (725 + 50 - 75 mm Hg).
c.
Relative humidity 50 percent + 30 percent.
4.3.2 Precautions. Adequate precautions should be taken during inspection to prevent condensation of
moisture on the switch. Precautions shall also be taken to prevent damage by heat when soldering
terminals.
4.3.3 Voltage. Calibration and endurance tests shall be conducted at a source voltage of 28 + 0.5 V
dc.
4.4 Qualification. Qualification inspection shall be performed at a laboratory acceptable to the
Government (see 6.3) on sample units produced with equipment and procedures normally used in
production.
4.4.1 Sample size. Four sample units shall be subjected for qualification inspection.
4.4.2 Inspection routine. Four sample units shall be subjected to the qualification inspections specified
in table II, in the order shown.
4.4.3 Defective. Failure of any qualification sample to pass any of the inspections specified herein may
be cause, at the option of the Government, for refusal to conduct additional inspections until the faults
revealed by the inspection have been corrected.
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