INCH-POUND
MIL-DTL-24640/18E
8 November 2011
SUPERSEDING
MIL-DTL-24640/18D
22 August 2002
DETAIL SPECIFICATION SHEET
CABLE, ELECTRIC, -20 TO +105 °C, 600 VOLTS, LIGHTWEIGHT, MULTI-TRIAD, 18 AWG, TYPE 3XSW
(INCLUDING VARIATION TYPE 3XSOW)
This specification is approved for use by all Departments and Agencies of the Department of Defense.
The requirements for acquiring the product described herein shall consist of this specification sheet and
MIL-DTL-24640.
Construction (Watertight)
First
Tin-coated copper conductor in accordance with table I.
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Second
Insulation material and basic construction requirements shall be in accordance with
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SAE-AS81044/12 and tested in accordance with the component wire ratings and
requirements listed on this specification sheet. Conformance testing shall be in
accordance with SAE-AS81044 prior to cabling.
Third
Three conductors, one black, one white, and one red, twisted together. The pitch shall be
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2±¼ inch.
Fourth
Optional binder tape.
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Fifth
Braided shield of 38 AWG tin-coated copper strands. Braid coverage shall be no less
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than 90 percent determined in accordance with WC 27500.
Sixth
Shield insulation of two polyester tapes or polyester tape and extruded jacket.
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Identification codes applied using Method 2.
Seventh
The required number of shielded, twisted triads shall be cabled together. Cabling
-
sequence shall be consecutive, starting with number 1 from center outward. Fillers may
be used, as necessary, to form a round cable.
Eighth
Optional binder tape.
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Construction Variant for Type 3XSW
Ninth
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Cross-linked polyolefin jacket (see table II for thickness).
NOTE: Manufacturer's identification tape or thread is required (see 3.7.3).
Construction Variant for Type 3XSOW
Ninth
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Braided shield, tin-coated copper strands. Braid must be constructed to meet surface
transfer impedance requirements as listed herein.
Tenth
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Optional binder tape.
AMSC N/A
FSC 6145
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