MIL-DTL-83502E
4.8 Methods of inspection.
4.8.1 Test methods. The following identified tests and test method assures socket integrity within
typical operating conditions and applications. Alternate commercial industry stand test method are
allowed, however when and alternate method is used, the qualifying activity must be notified prior to
performance of the test. The test methods described herein are proven methods and shall be the referee
method in cases of dispute.
4.8.2 Visual and mechanical inspection. Sockets shall be examined to verify that the dimensions,
materials, design construction, marking, and workmanship are in accordance with the applicable
4.8.3 Mating force (see 3.6). The initial force required to fully insert the test gage (see figure 3) shall be
measured. The measuring equipment shall conform to the following:
a. The vertical axis of the test gage shall coincide with the vertical axis of the socket.
b. The test gage shall travel along the vertical axis of the socket.
c.
The speed of insertion of the test gage into the socket contacts shall not exceed 2 inches (51 mm)
per minute for consistent-speed machines, or the rate of loading shall not exceed 80 pounds
(36.29 kg) per minute for contact-rate-of-force machines.
d. Scale mechanism shall have no dashpots or other damping devices.
e. Scales shall be calibrated in .125 pound (56.7 grams) steps or less, and shall be accurate to
within ±5 percent.
4.8.4 Contact withdrawal force (see 3.7). After two unmonitored insertions and withdrawals of the
maximum mating test gage (see figure 3), the individual withdrawal force shall be measured using the
minimum thickness single blade pin (see figure 3). Test pin shall be inserted to a depth of .100 inch
(2.54 mm) minimum and the withdrawal force shall be measured.
4.8.5 Contact retention (see 3.8). With the socket mounted to an appropriate fixture, the following
details and exceptions shall apply:
a. Solderless wrap: 7.5 pound (3.40 kg) axial load shall be applied in both directions, to terminals
similar to that applied by the wrapping tool.
b. Solder cup: .75 pound (0.34 kg) axial load shall be applied in both directions to terminals.
4.8.6 Insulation resistance (see 3.9). Unmated sockets shall be tested in accordance with test
procedure EIA-364-21.
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