MIL-DTL-83517A
4.5 Methods of inspection. Test parameters given in the following tests assure connector integrity
within typical operating conditions and application. Methods of inspection given in the specification shall
be the only acceptable methods unless an alternate method has been agreed to by the qualifying
authority prior to performance of the test. The test methods described herein are the preferred methods
and shall be the referee method in cases of dispute.
4.5.1 Visual and mechanical inspection. Connectors and associated fittings shall be inspected to
verify that the design, construction, physical dimension, marking, and workmanship are in accordance
4.5.1.1 Dimensional inspection. Mating dimensions shall be inspected by mating the connector with
its applicable mating gages or other suitable means acceptable to the Government.
4.5.2 Force to engage/disengage (see 3.5). The connector shall be engaged with its mating
standard part (see 3.1). During the entire coupling/uncoupling cycle (until the connector is fully
engaged/disengaged) the forces and/or torques necessary shall be as specified (see 3.1). A thread
coupled connector is fully engaged with its mating standard part when their reference planes (see 3.1)
coincide. The mating standard part is a steel jig containing the critical interface dimensions finished to the
tolerances specified (see 3.1). As an option for this test, a qualified mating connector may be used in
place of the standard steel jig with the approval of the Qualifying activity. Its spring members when
applicable shall be heat treated beryllium copper. The surface finish or mating surfaces shall be 16
microinches maximum, in accordance with ASME B46.1.
4.5.3 Coupling proof torque (see 3.6). The connector under test shall be engaged with its mating
standard part (gage) and the coupling nut tightened to the torque value specified (see 3.1). After one
minute the connector under test and its mating standard part shall be disengaged.
4.5.4 Contact gaging (see 3.7). After insertion of the specified oversize pin the specified number of
times (see 3.1), the contact to be tested shall be held rigid by means of a suitable jig or fixture. A gage
containing the test pin or test ring and a suitable force indicating dial shall be aligned to within .004 TIR of
any plane passing through the axis of the contact under test. Engagement or withdrawal of the test pin or
test ring shall be made smoothly and at such a rate that the dial does not bounce or otherwise give a
false reading. The test pin or test ring may be chamfered to facilitate entry, but the specified engagement
length shall not include the chamfer length, and the finish shall be as specified and in accordance with
4.5.5 Permeability of nonmagnetic materials (see 3.8). The permeability of the connector shall be
measured with an indicator in accordance with ASTM A342.
4.5.6 Seal (see 3.9).
4.5.6.1 Hermetic-sealed connectors (see 3.9.1). The unmated connector shall be tested in
accordance with method 112 of MIL-STD-202. The following details and exception shall apply:
Method of mounting In its normal manner in specified mounting hole (see 3.1).
a.
b.
Test condition letter C.
c.
Procedure number I.
Leakage rate sensitivity 10-8 cubic centimeters per second.
d.
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