MIL-DTL-11134G
4.8 Interchangeability and dimensional inspection. The dimensions listed in the drawings referenced shall be
gauged to determine conformance to the physical interchangeability requirements of 3.7 to the following, microphone
element (see 3.5.3.1), earphone receiver element (see 3.5.4.1), handle assembly (see 3.5.6), and connector U-161/U
(see 3.5.7). When a dimension is not within specified or design limits, it shall be considered a major defect.
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. Handset H-33( )/PT utilizes a 300 ohm earphone element, a 40 ohm carbon type microphone,
a push-to-talk switch and a six foot (extended) retractile cord terminating in a ten pin audio connector (U-161/U). It is
intended for use with radio equipment such as the AN/GRC-106.
6.2 Acquisition requirements. Acquisition documents must specify the following:
a. Title, number, and date of this specification.
b. When first article inspection is required (see 3.1).
c. Packaging requirements (see 5.1).
6.3 Nomenclature. The parentheses in the nomenclature will be deleted or replaced by a letter identifying the
particular design: for example H-33W/PT. The contractor should apply for nomenclature in accordance with the
applicable clause in the contract.
6.4 Interchangeability. Interchangeability information for handsets like units, assemblages, subassemblies, and
replaceable parts can be obtained from MIL-HDBK-454, guideline 7 (see 3.7).
6.5 Workmanship. For additional information in workmanship related to handsets refer to MIL-HDBK-454,
guideline 9 (see 3.8).
6.6 Tin whisker growth. The use of alloys with tin content greater than 97 percent, by mass, may exhibit tin
whisker growth problems after manufacture. Tin whiskers may occur anytime from a day to years after manufacture
and can develop under typical operating conditions, on products that use such materials. Conformal coatings applied
over top of a whisker-prone surface will not prevent the formation of tin whiskers. Alloys of 3 percent lead, by mass,
have shown to inhibit the growth of tin whiskers. For additional information on this matter, refer to ASTM-B545
(Standard Specification for Electrodeposited Coatings of Tin) (see 3.2.1).
6.7 Environmental. Environmental pollution prevention measures are contained in the packaging material. Refer
to the procuring activity for recommended disposability methods.
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