MIL-DTL-43607J
4.5.1.7.1 Non battery powered tools. Any combination of non battery powered tools similar, but not
limited to the following types, shall be used in an attempt to defeat the padlock. Total weight of the
tools shall not be greater than 20 lb (9.07 kg).
a. Saws, drills, and grinders manual powered.
b. Heating equipment limited to single tank type, not greater than 1200 °F (649 °C).
c. Hammer not greater than a 3 lb (1.36 kg) weight with 18 inch (457mm) long
handle.
d. Chisels, punches, jimmys, wrecking bars, and torque levers limited to 18 inches
(457 mm) in collapsed length.
e. Common hand tools.
f. Chemicals capable of softening or dissolving critical components, explosives
excluded.
Defeat of the padlock in less than five minutes accumulated work time (excluding preparation, rest,
and safety precaution periods) shall constitute failure of this test (see 3.5.2.6.1).
4.5.1.7.2 Battery powered tools. Any combination of battery powered saws, drills, and grinders shall
be used in an attempt to defeat the padlock. Total weight of the tools shall not be greater than 20 lb
(9.07 kg). Defeat of the padlock in less than one minute accumulated work time (excluding
preparation, rest, and safety precaution periods) shall constitute failure of this test (see 3.5.2.6.2).
4.5.1.8 Heat resistance test. Suspend a locked padlock by the shackle in an unheated oven. Turn the
oven on and bring the oven temperature up to not less than 1875°F (1023°C), but not more than
1925°F (1051°C). Maintain oven temperature at 1875 °F (1023°C) for not less than 30 minutes. Turn
oven off and allow the padlock to cool to room temperature. After the cooling, restrain the shackle
and apply a pull of not less than 50 lb (23 kg) to the padlock body. If the shackle opens or separates
from the padlock, it shall constitute failure of the test (see 3.5.2.7).
4.5.1.9 Low temperature operation test. Cold-soak the padlock at a temperature not higher (warmer)
than -60°F ± 2ºF (-51°C ± 1ºC) for a minimum of 1 hour. While at the temperature, subject the padlock
to the operational test specified in 4.5.1.14 (see 3.5.2.8).
4.5.1.10 Key integrity test. The test padlock shall be a locked padlock. The keys from 10 other padlocks
selected at random from all the padlocks in the sample shall be used to attempt to unlock the test padlock.
A key from each of the 10 padlocks will be fully inserted into the keyway. The key shall then be slowly
withdrawn while applying a jiggling-twisting force in the direction that the lock normally opens. The
padlock shall resist the withdrawing and jiggling-twisting force for 1 minute without opening. If the test
padlock opens, it shall constitute failure of this test (see 3.5.3).
4.5.1.11 Salt spray (fog) resistance test. The padlock and keys, with keys not inserted in the
cylinder plug, shall be subjected to 96 hours of salt spray (fog) in accordance with ASTM B 117.
After 96 hours, rinse the padlock and keys in tap water, and examine for evidence of deterioration of
any component. Any evidence of deterioration, except for minor corrosion spots that obviously do not
affect the performance of the padlock, shall constitute failure of this test (see 3.5.2.9).
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