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|  MIL-M-48640 (AR)
4.7.9.5 Low temperature. Subject the MBD to the LOW
Temperature test specified in MIL-STD-810, Method 502.1, Procedure I.
The storage temperature shall be minus 62 degrees C. The lowest
operating temperature shall be minus 40 degrees C. The performance
tests of Table II shall be applied.
4.7.9.6 Temperature cycling. The rate of temperature change in
the test chamber shall not exceed 10 degrees C per hour throughout
the temperature cycling test of 4.7.10.1. The performance tests of
Table II shall be applied.
4.7.9.7 Humidity. Place the MBD in a humidity chamber and
subject it to the humidity test specified in MIL-STD-81O, Method
507.1, Procedure IV. During Steps 4, 6, and 8 of Procedure IV,
subject the MBD to the performance tests of 4.7.4. After exposure,
subject the assembly to the performance tests of Table 11.
4.7.9.8 Dust. Subject the MBD to the dust test specified in
MIL-STD-81O, Method 509.1, Procedure I. At the completion of this
test, subject the MBD to the performance tests of Table II.
4,7,10.9 Salt fog. Subject the MBD to the corrosion test
specified in MIL-STD-81O, Method 509.1, Procedure I. At the
conclusion of this test, subject the MBD to the performance tests of
Table II.
5.
PACKAGING
5.1 Packaging, packing, and marking. Packaging, packing, and
marking shall be in accordance with Packaging Data Sheet P9364909.
The level of protection shall be as specified in the procurement
document (see 4.1.3).
6.
NOTES
6.1 Intended use. The MBD 9364909 is specifically used for
precise sight alignment facilities required by modern high
performance gun barrels.
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