MIL-DTL-11352K(AT)
4.6.4.9.2 Procedure. The assembled vision block shall be set-up in the test apparatus and
tested in accordance with method 505, procedure II of MIL-STD-810 or equivalent (see 4.4.1).
Temperature of the specimens shall be maintained at 46±3 °C (115±5 °F), for test period. At the
conclusion of the test, the vision block shall be tested as specified in 4.6.3.1, 4.6.3.2 and 4.6.3.3
and checked for any physical damage. Upon examination, samples that pass this test shall be
subjected to the humidity resistance of 4.6.4.7.
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.
6. NOTES
(This section contains information of a general or explanatory nature which may be helpful, but
is not mandatory.)
6.1 Intended use. Vision blocks covered by this specification are intended to provide
direct vision for vehicle personnel and minimize injury of personnel resulting from small caliber
projectiles. Type I and II vision blocks are intended to be interchangeable. This specification
covers vision blocks with and without laser protection filters. The vision blocks are military
unique because they are used in combat areas only and have no commercial application.
6.2 Acquisition requirements. Acquisition documents should specify the following:
a.
Title, number, and date of this specification.
b.
Specific type, class and duty required (see 1.2).
c.
If required, the specific issue of individual documents referenced (see 2.2.1 and 2.3).
d.
When first article inspection is required and guidance (see 3.1 and 4.2, and 6.3).
e.
Applicable drawing number (see 3.3).
f.
If sampling plan is other than as specified (see 4.3.1).
g.
If there are any verification alternatives (see 4.4.1)
h.
If inspection conditions are other than as specified (see 4.5).
i.
Destination for ballistic samples (see 4.6.3.4).
j.
Packaging requirements (see 5.1).
6.3 First article. When requiring a first article inspection, contracting documents should
provide specific guidance to offerors (see 6.2). This guidance should cover whether the first
article is a first article sample, a first production item, or the number of test items. These
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