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|  MIL-S-18471G(AS)
(Copies of specifications, standards, handbooks drawings, and publication
required by manufacturers in connection with specific acquisition functions
should be obtained from the contracting activity or as directed by the
contracting officer.)
2.2 Other publications. The following document forms a part of this
specification to the extent specified herein. The issues of the document
which is indicated as DoD adopted shall be the issue listed in the current
DoDISS and the supplement thereto, if applicable.
NATIONAL FIRE PREVENTION ASSOCIATION
NFPA Code 56-A 1973
(Application for copies should be addressed to the National Fire Prevention
Association, publication Sales Department, Batterymarch Park, Quincy, MA,
02269.)
2.3 Order of precedence. In the event of a conflict between the text of
this specification and the references cited herein, the text of this specifi-
cation shall take precedence, except for SD-24.
3.
REQUIREMENTS
3.1 General design requirements.
3.1.1 Selection of materials and standard parts. The selection of
materials, standard parts, processes corrosion protective coatings, and design
features to prevent corrosion shall be in accordance with SD-24 or the aircraft
detail specification. Parts shall be selected and processed in accordance
with Procedure I of MIL-STD-965 (see 6.2.2). Standard parts are those
parts specified by the applicable detail specification or those listed in
MIL-BUL-147, MIL-STD-1515, and MIL-E-5400, appendix A. MIL-BUL-544 shall
be considered as a secondary specification for parts selection (with the
exception of electronic and electrical parts).
3.1.1.1 Materials. Materials and their applicable specification shall
appear on all detail drawings. Use of materials which are not controlled by
Government specifications nor specifically described herein, shall be approved
in writing by the Government procurinq activity; hereinafter it shall be
referred to as the procuring activity. Particular care shall be given to
close fitting parts in the choice of both materials and corrosion control
practices. The contractor shall prepare specifications or standards for
materials or processes inadequately defined by Government or acceptable non-
government organization specifications and standards (see 6.2.2.).
3.1.1.1.1 Metal parts. All metal parts shall be of the corrosion-resistant
type or treated to render them resistant to corrosion. Unless protected
against galvanic corrosion, dissimilar metals (as specified in MIL-STD-889)
shall not be used in contact with each other. General design information
governing usage of metals shall be in accordance with MIL-HDBK-5. General
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