MIL-DTL-28748D
4.7.15 Salt spray (corrosion) (see 3.5.13). The unmated plugs and receptacles, nonremovable contacts (unwired and unmated), and
nonremovable contacts mounted in accordance with figure 4 shall be tested in accordance with method 1001 of MIL-STD-1344. The
following details shall apply:
a. Test condition B.
b. Measurements after exposure: Immediately after exposure, the exterior surfaces of the connectors and of the
individual sets of pin and socket contacts shall be washed with tap water and the connectors and the individual sets
of pin and socket contacts shall be dried for 12 hours maximum in a circulating air oven at a temperature of
38°C ± 3°C (100°F ± 5°F). Following the salt spray test, the unmated plugs and receptacles shall be subjected to
the dielectric withstanding voltage test specified in 4.7.5, except the magnitude of test voltage shall be in
accordance with the "after conditioning" values of table III.
4.7.16 Low level circuit (see 3.5.14). Nonremovable contacts shall be tested in accordance with method 3002 of MIL-STD-1344.
4.7.17 Resistance to test probe damage (nonremovable contacts) (see 3.5.15). Non-removable contacts shall be tested in
accordance with method 2006.1 of MIL-STD-1344, and with the bending moment of table XV applied. The contact shall be suitably
supported to prevent bending, but the support shall not reinforce the pressure member. The test probe shall consist of a hardened
steel pin having a diameter equal to the nominal dimension of the mating pin contact and a spherical radius tip. The test probe shall
be free and unsupported, and the socket contact shall be maintained in a horizontal position. For each specified depth, the contact
shall be rotated one complete revolution at a uniform rate.
TABLE XV. Bending moment for test probe damage test. 1/
Contact
Bend moment
size
inch-pounds (kg)
16
2.0 (0.91)
20
0.5 (0.23)
22
0.125 (0.057)
1/ Metric equivalents are given for general information only.
4.7.18 Contact separating forces (nonremovable contacts) (see 3.5.16). Provisions shall be made for mounting socket contacts in
a suitable position for applying gradually increasing loads during withdrawal of the minimum diameter hardened test pins. The depth
of engagement shall be equal to the maximum length of the pin for the mating connector. Polished test pins as specified on figure 7
with a maximum diameter, as shown on figure 7 table, shall be inserted into and withdrawn from each socket contact three times prior
to measurement. Following this procedure, polished test pins as specified on figure 7 with a minimum diameter, as specified on
figure 7 table, shall be inserted into each socket contact. Withdrawal forces, applied gradually, shall then be measured.
24
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business