MIL-B-52734C (ME)
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. Dimensions shown on
the drawings shall be verified using parts at 68 degrees Fahrenheit (F) to
70 °F.
3.2
First article
3.2.1 First article. When specified (see 6.2), the bridge bays or
separately procured components shall be subjected to first article inspection
(see 6.3) in accordance with 4.3.
3.2.2 Hydraulic system components. In addition to the first article type
II bridge bays, the following hydraulic components shall be furnished and
tested by the contractor prior to the time the first articles are furnished:
One each of all hydraulic fittings, hose assemblies, valves, quick-
disconnects, couplings and plugs, and hydraulic cylinders. The hydraulic
components shall be identical to those furnished on the first article. Tests
shall be those specified in section 4 and shall be subject to surveillance and
approval of the Government.
3.3 Materials. Materials shall be as specified herein and as shown 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 prevention and control. Type I and II bridge
bays 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 items 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 material, 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.
3.3.1.3 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 bridge may be newly fabricated from recovered materials to the maximum
extent practicable, provided the bridge produced meets all other requirements
of this specification. Used, rebuilt or remanufactured components, pieces and
parts shall not be incorporated in the bridge.
3.3.2 Welding electrodes. Unless otherwise specified on the end product
drawings, the following welding electrodes shall be used.
3.3.2.1
For aluminum.
Welding electrodes for aluminum shall conform to AWS
4
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