MIL-DTL-641F
4.6.12 Salt spray (corrosion) (see 3.6.11). Jacks shall be tested in accordance with method 101 of MIL-STD-
202. The following details shall apply:
a. Test condition letter B.
b. Measurements after exposure After 1-hour drying period at room temperature, contact resistance shall be
measured as specified in 4.6.2.
c. Unless otherwise specified, 5 percent salt solution.
4.6.13 Frame strength (see 3.6.12) unless otherwise specified (see 3.1). Jacks shall be mounted on a suitable
panel, with the long axis of the jack horizontal, and the heads of the pileup clamping screws facing upward. A 30-
pound minimum load, freely suspended between the pileup clamping screws, shall be applied for 5 minutes.
4.6.14 Strain relief (see 3.6.13). While terminated to a specified cable, a force of 50 pounds minimum shall be
applied in a longitudinal direction for a minimum of five minutes.
4.6.15 Contact spring pressure (see 3.6.14).
4.6.15.1 Mated jacks (see 3.6.14.1). The specified test plug (see 3.1) conforming to the applicable figure (see
figures 1 to 7, inclusive) shall be used. Each jack shall be monitored for electrical continuity, using a test current
of 100 ± 2 milliamperes, dc. A force of 16 ± (0, 1) ounces shall be applied in a direction perpendicular to the jack
axis. Continuation of continuity for a period longer than ten microseconds constitutes a failure.
4.6.15.2 Unmated jacks (see 3.6.14.2). While in the unmated state, each contact spring shall be subjected to
a force of 12 ± (0, 1) ounces applied in a direction perpendicular to the jack axis away from the jack body.
4.6.16 Contact spring overtravel (see 3.6.15). The specified test plug (see 3.1) conforming to the applicable
figure (see figures 1 to 7, inclusive) shall be used. During the insertion of the test plug, the flexing of the contact
spring shall be measured.
4.6.17 Static load (see 3.6.16). A static load of 150 pounds minimum shall be applied to the jack at
approximately midpoint for one minute minimum. The jack shall be resting in a horizontal position on a concrete
floor or rigid metal surface. The load shall be applied perpendicular to the longitudinal axis of the jack through a
rigid bar 0.50 ± 0.25 wide placed tangent to the shell surface and parallel to the floor or surface supporting the
jack.
4.6.18 Longitudinal pull (see 3.6.17). The specified test plug (see 3.1) conforming to the applicable figure (see
figures 1 to 7, inclusive) shall be used. The test plug, when inserted in the jack and subjected to a longitudinal
pull of one pound less than the measured withdrawal force shall not render the jack inoperative or cause an open
contact (discontinuity) between the plug and jack.
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or
order (see 6.2). When packaging of materiel is to be performed by DoD or in-house contractor personnel, these
personnel need to contact the responsible packaging activity to ascertain packaging requirements. Packaging
requirements are maintained by the Inventory Control Point's packaging activities within the Military Service or
Defense Agency, or within the Military Service's System Commands. Packaging data retrieval is available from
the managing Military Department's or Defense Agency's automated packaging files, CD-ROM products, or by
contacting the responsible packaging activity.
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