MIL-DTL-26518C
6. NOTES
(This section contains information of a general or explanatory nature, which may be helpful, but is not mandatory.)
6.1 Intended use. All connectors and contacts covered by this specification are intended for use in airborne, ground support, and
shipboard electrical and electronic equipment where presence of residual magnetism must be held to very low levels to avoid
interference with nearby sensitive instrumentation. The connectors and contacts covered by this specification are military unique
because they must be able to operate at high altitude (70,000 feet (21.34 km) maximum), operate at a temperature range of -55°C to
+200°C, withstand 48 hours of salt spray (without exposure of base metals, pitting and porosity of finishes), and 100 g's of shock with
no electrical discontinuities. Commercial electronic connectors and contacts are not designed to withstand such extreme and sudden
environmental conditions and would experience catastrophic failure.
a. Class R connectors are intended for use in environment resisting applications where the operating temperature range
of -55°C to +200°C is experienced.
b. Class H connectors are intended applications requiring hermetic sealed applications.
c. All classes of connectors are for use in applications wherein presence of residual magnetism must be held to very low levels
to avoid interference with nearby sensitive instrumentation.
6.2 Acquisition requirements. Acquisition documents should specify the following:
a. Title, number, and date of the specification.
b. Title, number, and date of the applicable specification sheet, and the complete PIN (see 1.2.1 and 3.1).
c. Certificate of compliance covering materials, when required.
d. Issue of DODISS to be cited in the solicitation, and if required, the specific issue of individual documents referenced (see 2.1
and 2.2).
e. Packaging requirements (see 5.1).
6.3 Qualification. With respect to products requiring qualification, awards will be made only for products which are, at the time of
award of contract, qualified for inclusion in Qualified Products List QPL No. 28804 whether or not such products have actually been so
listed by that date. The attention of the contractors is called to these requirements, and manufacturers are urged to arrange to have
the products that they propose to offer to the Federal Government tested for qualification in order that they may be eligible to be
awarded contracts or orders for the products covered by this specification. The activity responsible for the Qualified Products List is
the Defense Supply Center Columbus, P.O. Box 3990, ATTN: DSCC-VQ, Columbus, Ohio 43216-5001. Application procedures
should conform to the "Provisions Governing Qualification" (see 6.3.1).
6.3.1 Provisions governing qualification. Copies of "Provisions Governing Qualification" may be obtained upon application to
Standardization Document Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.
6.4 Environmentally preferable material. Environmentally preferable materials should be used to the maximum extent possible that
the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle
costs. Table XI lists the Environmental Protection Agency (EPA) top seventeen hazardous materials targeted for major usage
reduction. If any of these hazardous materials are required, it is recommended that it be used only when other materials cannot meet
performance requirements.
TABLE XI. EPA top seventeen hazardous materials.
Benzene
Dichloromethane
Tetrachloroethylene
Cadmium and compounds
Lead and compounds
Toluene
Carbon Tetrachloride
Mercury and compounds
1,1,1 - Trichloroethane
Chloroform
Methyl Ethyl compounds
Trichloroethylene
Chromium and compounds
Methyl Isobutyl Ketone
Xylenes
Cyanide and compounds
Nickel and compounds
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