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Material deterioration and control |
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|  MIL-S-52860D
3.
REQUIREMENTS
3.1 Description. The latching alarm switch (hereinafter called "LAS"
shall be in accordance with top assembly TA13220E380 and as specified herein.
3.1.1 Major components.
The LAS shall consist of the following major
component:
a.
Printed wiring board (PWB) assembly TA13220E3030 (see 3.5.5).
3.1.2 Drawings. The drawings forming a part of this specification are end
product drawings. No deviation from the prescribed dimensions or tolerances
is permissible without prior approval of the contracting officer. Where
tolerances could cumulatively result in incorrect fits, the contractor shall
provide tolerances within those prescribed on the drawings to insure correct
fit, assembly and operation of the LAS and PWB assemblies when furnished
separately. Any data (e.g., shop drawings, layouts, flow sheets, processing
procedures, etc.) prepared by the contractor or obtained from a vendor to
support fabrication and manufacture of the production item shall be made
available, upon request, for inspection by the contracting officer or his
designated representative.
3.2 First article. Unless otherwise specified (see 6.2), a sample shall
be subjected to first article inspection (see 6.3) in accordance with 4.3.
3.3 Materials. Materials shall be as specified herein and on the
applicable drawings. Materials not specified shall be selected by the
contractor and shall be subject to all provisions of this specification.
3.3.1 Material deterioration and control. The LAS shall be fabricated
from compatible materials, inherently corrosion resistant or treated to
provide protection against the various forms of corrosion and deterioration
that may be encountered in any of the applicable storage and operating
environments to which the LAS may be exposed.
3.3.1.1 Dissimilar metals. Dissimilar metals shall not be used in
intimate contact with each other unless protected against galvanic corrosion.
Dissimilar metals and methods of protection are defined and detailed in
MIL-STD-889.
3.3.1.2 Identification of materials and finishes. The contractor shall
identify the specific materials, material finish or treatment for use with
components and sub-components and shall make information available, upon
request, to the contracting officer or designated representative.
3.3.2 Recovered materials. For the purpose of this requirement, recovered
materials are those materials which have been collected from solid waste and
reprocessed to become a source of raw materials, as distinguished from virgin
raw materials. The components, pieces, and parts incorporated in the LAS may
be newly fabricated from recovered materials to the maximum extent
practicable, provided the LAS produced meets all other requirements of this
specification. Used, rebuilt or remanufactured components, pieces, and parts
shall not be incorporated in the LAS.
3.4 Environmental conditions. The LAS and PWB assemblies when furnished
separately shall withstand individual environmental conditions specified
herein, or combinations thereof, without damage (see 6.4.3), performance
degradation, or malfunction when tested as specified in 4.5.2.6.
3
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