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Switching Equipment, Combat System, Command and Control, Fire Control, And Interior Communication General Specification
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MIL-S-17000N(SH)
(i) Identification of equipment and parts for ease in accurate
requisitioning.
(j) Drawings with complete and concise manufacturing instructions.
(k) Maximum ease of repair by Naval personnel and with the facilities
normally found on board ships of the Navy.
(1) Maximum protection for operating and maintenance personnel.
(m) Maximum ease of installation.
3.3.2 Standard stock items. Standard stock materials, parts, and hardware
shall be used to as great an extent as practicable (see 3.6.2). For the purpose
of this specification, standard stock is defined as material listed in the
Federal Supply Catalog and includes such items as bearings, grease, oil, wire,
c- ~
bolts, s`rewsnuts, and washers.  (Copies of this catalog may be consulted in
the office of the Defense Contract Administration Services Management Area
(DCASMA)).  Proprietary parts or parts available from only one source shall not
be used where equivalent or similar parts are available as standard parts or are
available from two or more sources.
3.3.3 Interchangeability.  Parts shall be interchangeable in accordance
with requirement 7 of MIL-STD-454.  In no case shall parts be physically inter-
.
changeable or reversible unless such parts are also interchangeable or reversible
with regard to function, performance, and strength.
3.4 Materials and processes.  The following material and processes are
applicable to the switching equipment described herein.
3.4.1 The following requirements of MIT.-STD-454 are applicable:
Requirement 3 - Flammable materials.
Requirement 4 - Fungus-inert materials.
Requirement 11 - Insulating materials, electrical (see 3.4.5 and
3.6.27.3.1).
Requirement 13 - Structural welding.  Test and inspection require-
ments noted in MIL-w-8604 are not required.
Requirement 15 - Ferrous alloys, corrosion-resistance (only austenitic
corrosion-resistant steel shall be used).
Requirement 21 - Casting.
Requirement 26 - Arc-resistant materials.
Requirement 43 - Lubricants.
3.4.1.1 Recovered materials.  Unless otherwise specified herein, all equip-
ment, material, and articles incorporated in the switching equipment 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.
3.4.2 Toxic materials. Radioactive materials, materials containing
mercury, and heavy metal biocides shall not: be used.
3.4.3 Wood.
Wood shall not be used.
11

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