MIL-PRF-28876E
3.3 Materials. Materials shall be as specified herein and in the
applicable specification sheet. In all cases, materials selected for use
shall meet all qualification requirements as specified, and be of a type and
quality to assure physical, chemical, and optical compatibility with the
requirements of this specification. All materials used shall be nontoxic (see
3.3.5), nonnutrient to fungus (see 3.14.13) and manufactured to good
workmanship quality (see 3.10.4). Materials chosen shall be the lightest
practicable material suitable for the intended use. Materials shall not
interfere with or degrade the terminus cleaning operation and shall provide 20
year service.
3.3.1 Connector parts: Connector shells shall be aluminum. Connector
inserts shall be either aluminum or a polymer material. Backshells, insert
retention nuts, and dust covers shall be either aluminum, corrosion resistant
(CRES) steel, or a polymer material.
3.3.2 Finish. The resultant finish on all connector parts shall meet the
requirements herein and be:
a.
Aluminum components: The finish used for external parts shall
minimize reflections, shall be electrolytically compatible with
cadmium plate, and shall meet the requirements herein. The finish
used for internal parts shall be corrosion resistant.
b.
CRES components: Unless otherwise specified (see 3.1), all exposed
corrosion resistant steel parts shall be passivated and shall be
treated to minimize reflections. CRES threads shall be treated in a
manner to minimize galling and cold welding with mating parts. CRES
parts which may be mated to non-CRES parts shall be treated to
minimize scratching or damage to mating components during mating
operations.
3.3.3 Recovered materials. Unless otherwise specified herein, all
equipment, material, and articles incorporated in the products covered by this
specification shall be new and shall be fabricated using materials produced
from recovered materials to the maximum extent practicable without
jeopardizing the intended use. The term "recovered materials" means materials
which have been collected or recovered from solid waste and reprocessed to
become a source of raw materials, as opposed to virgin raw materials. None of
the above shall be interpreted to mean that the use of used or rebuilt
products is allowed under this specification unless otherwise specifically
specified.
3.3.4 Nonmetallic materials. Nonmetallic materials used in connector parts
shall not be degraded by the use of solvents or cleaning agents, nor be
degraded at the specified environmental conditions.
3.3.5 Toxic and hazardous products and formulations. Materials used in the
connectors, backshells, insert retention nuts, and dust covers shall not give
off toxic or explosive fumes when exposed to flame. Materials used shall have
no adverse effect on the health of personnel when used for its intended
purpose.
3.3.6 Metals: Metals shall be corrosion resistant, or treated to be
corrosion resistant. Unless otherwise specified (see 3.1), metals shall be
nonmagnetic.
3.3.7 Dissimilar metals. The use of dissimilar metals in intimate contact
should be avoided. When dissimilar metals are used in intimate contact with
each other, protection against electrolysis and corrosion shall be provided.
5
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business