MIL-S-24744(SH)
3.4.13.2 Stress-corrosion. The material selection and fabrication processes as specified in
MIL-HDBK-729 shall be used to prevent stress-corrosion of metallic parts.
3.4.1.3.3 Electrical and electronic parts. Electrical and electronic parts shall be corrosion
resistant or suitably protected in accordance with MIL-STD-454, requirement 15.
3.4.1.3.4 Protective coatings. The scrubber structure and body panels shall be cleaned in
accordance with TT-C-490 and corrosion protected as follows:
a.
Conditioning (aluminum alloys): Condition with deoxidizer in accordance with MIL-
C-38334.
b.
Pretreatment (aluminum alloys): Chemical conversion coating in accordance with MIL-
C-81706, class 1a, applied in accordance with MIL-C-5541.
c.
Pretreatment (ferrous alloys): Chemical conversion coating in accordance with lT-C-
490, type I.
d.
Primer One coat of MIL-P-23377, type I, class 1, 0.6 to 0.9 roils dry film thickness.
e.
Finish: Two coats of MIL-C-83286, FED-STD-595 color yellow number 13538, totalling
1.7 to 2.3 roils dry film thickness. All components used to hold, restrain or protect acid-
type storage batteries shall be painted with two coats of commercial-grade acid-proof
paint. Instrument and control panels shall be painted with a commercial-grade flat black
or wrinkle black finish.
3.4.1.4 Fasteners. Commercial grade fasteners shall be used throughout. All bolted, screwed,
or threaded fasteners shall incorporate adequate locking devices. Self-locking nuts are preferred and
shall be used on all fasteners in assemblies which are subjected to significant operating vibration.
Captive, quick-disconnect fasteners with a positive locking means shall be used on component
covers and access plates. Fasteners shall be of corrosion resistant materials or corrosion mated in
accordance with MIL-STD-808.
3.4.1.5 Interchangeability. All scrubbers furnished under a specific contract shall be identical
to the extent necessary to ensure interchangeability of component parts, assemblies, accessories, and
spare parts without modification of parts or the scrubber.
3.4.1.6 Fungus resistance. Materials selected shall be fungus resistant or shall be suitably
treated to resist fungus. Electrical and electronic components shall be fungus inert in accordance
with MIL-STD-454, requirement 4, or shall be suitably treated to resist fungus in accordance with
MIL-T-13867.
3.4.2 Electromagnetic interference. The scrubber shall meet the radiated emissions require-
ments of MIL-STD-461, UM03, group II vehicles.
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