MIL-DTL-43607J
3.5.2.1 Wear resistance. The padlock shall withstand 10,000 complete locking and unlocking
cycles, without failure to fully lock and fully unlock during any cycle, and without loss of resistance
to surreptitious neutralization (see 4.5.1.2).
3.5.2.2 Drop resistance, ambient temperature. The locked padlock shall withstand not less than
10 consecutive drops on different sides, from a height of not less than 6 feet (ft) (1.83 meter (m)),
onto a hard, unyielding surface without exhibiting evidence of fracture of any component or
malfunction (see 4.5.1.3).
3.5.2.3 Drop resistance, high temperature. The locked padlock shall not be affected from being
dropped from a height of not less than 3 ft (0.9 m) onto a hard unyielding surface. The padlock shall
not open by means other than with the proper key. The padlock is to be dropped while it is still hot
from having been heated to a temperature of not less than 1200 degrees Fahrenheit (°F) (649 degrees
Celsius (°C)) (see 4.5.1.4 and 4.5.1.7).
3.5.2.4 Shackle pull-out resistance. The padlock shall resist a tensile pull of not less than
12,000 pound-force (lbf) (53 378 Newton (N)) on the shackle without pulling the shackle out of the
padlock (see 4.5.1.5).
3.5.2.5 Shackle resistance, low temperature. The padlock shall resist opening by means other than
by the proper key after being cold soaked a minimum of 1 hour at -100°F (-73°C) and being struck
with a 3 lb (1.36 kg) double faced engineers hammer. This performance is required while the padlock
is secured in the locked mode on a MIL-DTL-29181 hasp in a vertical wall mount position (see
4.5.1.6).
3.5.2.6 Forced entry resistance.
3.5.2.6.1 Non battery powered tools. The padlock shall withstand a concentrated forced entry attack
using non battery powered tools for an accumulated work time of at least five minutes (see 4.5.1.7.1).
3.5.2.6.2 Battery powered tools. The padlock shall withstand a concentrated forced entry attack
using battery powered tools for an accumulated work time of at least one minute (see 4.5.1.7.2.).
3.5.2.7 Heat resistance. The padlock shall withstand a direct pull of not less than 50 lbf (222 N)
on the shackle after exposure to a temperature between 1875°F (1023°C) and 1925°F
(1051 °C), without opening or separation of the shackle (see 4.5.1.8).
3.5.2.8 Low temperature operation. The padlock shall be operated at -60°F ± 2ºF (-51°C ± 1ºC)
when the appropriate operating key is inserted and turned in the padlock. The cylinder shall turn
without sticking or excessive force or pressure and release the shackle both when initially tested and
after 10,000 cycles. The control key shall also perform its design function without sticking or
excessive pressure or force before and after the 10,000 cycle test (see 4.5.1.9).
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