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|  MIL-S-26547C
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.
3.
REQUIREMENTS
The starter-generator furnished under this specifi-
3.1 Qualification.
cation shall be a product which has been tested, and has passed the quali-
fication tests specified herein, and has been listed on or approved for
listing on the applicable qualified products list.
3.2 Selection of specifications and standards. Specifications and
standards for necessary commodities and services not specified herein shall
be selected in accordance with MIL-STD-143 except as provided in 3.2.1 and
3.2.2.
3.2.1 Commercial parts. Commercial parts having suitable properties may
be used where, on the date of invitation for bids, there are no standard
parts.
In any case. commercial utility parts, such as screws, bolts, nuts,
and cotter pins, having suitable properties may be used provided:
a. They can be replaced by the standard parts (MS or AN) without
alteration.
b. The corresponding standard part numbers are referenced in the
parts list and, if practical, on the contractor's drawings.
3.2.2 Standard parts. With the exception in 3.2.1, MS and AN standard
parts shall be used where they suit the purpose. They shall be identified
on the drawings by their part numbers.
3.3 MATERIALS
3.3.1 Fungus proof materials. Materials that are nutrients for fungi
shall not be used where it is practical to avoid them. Where used and not
hermetically sealed, they shall be treated with a fungicidal agent acceptable
to the procuring activity. However, if they will be used in a hermetically
sealed inclosure, fungicidal treatment will not be necessary.
3.3.2 Metals. Metals shall be of the corrosion-resistant type or treated
to resist corrosion due to fuels, salt spray, or atmospheric conditions as
may be encountered in storage or normal service.
*
3.3.2.1 Dissimilar metals. Unless protected against electrolytic cor-
rosion. dissimilar metals shall not be used in intimate contact with each
other. Dissimilar metals are defined in MIL-STP-889.
3.3.3 Castings. Castings shall be clean, sound, and free from cracks,
excessive porosity and other defects. Castings shall be classified in accord-
ance with MIL-C-6021, and shall be so indicated on the applicable detail draw-
ings.
3
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