MIL-DTL-55422B
TABLE IV. Group B inspection.
Test
Requirement paragraph
Method paragraph
Group I
Vibration
Thermal shock
Shock
Retaining and release force
Group II
Dielectric withstanding voltage
Salt spray
4.4.1.4.1 Sampling plan. Each year six sample units shall be selected from the first lot and divided into two
subgroups of three each. No failures shall be allowed. Group B inspection shall be performed on sample units that
have passed group A inspection, unless the Government considers it more practical to select a separate sample from
the lot for group B inspection.
4.4.1.4.2 Disposition of sample units. Sample units which have been subjected to group B inspection shall not be
delivered on the contract or order.
4.5 Methods of inspection.
4.5.1 Inspection of product. Clips shall be examined for compliance with applicable design, construction, physical
4.5.2 Test procedures.
4.5.2.1 Salt spray (corrosion) (see 3.6). Sample clips shall be tested in accordance with MIL-STD-202, method
101, condition A. Salt concentration shall be 5 percent. After the test, the clips shall be examined for exposure of
base metal or blistering of the plated surface.
4.5.2.2 Vibration, high frequency (see 3.7). Clips shall be tested in accordance with MIL-STD-202, method 204,
and with the following exceptions and details:
a.
Specimens shall be mounted in a normal manner to a test plug which shall be fastened to the vibration
machine. The clip shall be mated to the plug or tube without the use of safety wire or other
supplementary locking devices. The lead wire shall be supported by a stationary frame not closer than
12 inches (30.48 cm) from the mated clip and tube cap or test plug. The wire shall conform to MIL-DTL-
b.
Test condition letter D.
c.
The clips shall be wired and current allowed to flow at the maximum operating rated voltage and current
of the tube with which the clip mates.
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