MIL-DTL-15743E
3.6.5 Shock. When enclosed rotary switches are tested as specified in 4.6.6, acceptance is based on
no loss of illumination of the lamp circuit. Following the test, the enclosed rotary switches shall pass the
dielectric withstanding voltage tests (if applicable) and the level of effectiveness of enclosure (see 4.6.2
and 4.6.7). The monitoring of switch contacts shall be part of the qualification test requirements of
3.6.6 Level of effectiveness of enclosure. The enclosed rotary switches shall meet the specific degree
of enclosure requirements specified (see 3.1) in accordance with MIL-STD-108 when tested as specified
in 4.6.7. Following the test, the enclosed rotary switches shall satisfactorily pass the dielectric
withstanding voltage test (if applicable) (see 4.6.2).
3.6.7 Salt spray. When enclosed switches are tested as specified in 4.6.8, there shall be no evidence
of excessive corrosion. Excessive corrosion is defined as that which interferes with electrical or
mechanical performance, or in the case of plated metals, corrosion which has migrated through the
plating and attacked the base metal. Where corrosion-resisting treatments are used, it will be permissible
to have limited superficial corrosion such as would result from scratches.
3.7 Finish.
3.7.3 Painting. Unless otherwise specified (see 3.1), brass enclosures shall be neither primed nor
painted (see 6.2).
3.7 4 Pure tin. The use of pure tin, as an underplate or final finish, is prohibited both internally and
externally. Tin content of (product) and solder shall not exceed 97 percent, by mass. Tin shall be alloyed
with a minimum of 3 percent lead, by mass (see 6.10)
3.8 Marking.
3.8.1 Information and identification plates. Information and identification plates shall be attached to the
box cover by means of screws in tapped holes or screws held by pads brazed to the back of the cover.
Unless otherwise specified (see 3.1), plates for steel and brass boxes shall be brass and plates for
3.8.1.1 Identification plates. Identification plates material shall be accordance with ASTM B36/B 36
and ASTM B121/B121 as specified (see 3.1). Marking information shall be as specified (see 3.1). Plate
size shall be as specified (see 3.1). Where not specified rectangular plates shall be of the standard
dimensions specified in MIL-DTL-15024.
information is not specified, information plates shall be furnished blank. Plate size shall be as specified
(see 3.1).
3.8.1.3 Caution plate. Caution plates shall be as specified (see 3.1).
3.9 Workmanship. Switches shall be processed in such a manner as to be uniform in quality and shall
be free from cracked or displaced parts, sharp edges, burrs, and other defects, which will affect life,
serviceability, or appearance.
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