INCH-POUND
MIL-DTL-24643/13E
1 October 2009
SUPERSEDING
MIL-DTL-24643/13D
22 August 2002
DETAIL SPECIFICATION SHEET
CABLE, ELECTRICAL, -20 °C TO +90 °C, 300 VOLTS, TYPE LSTTRS
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-24643.
Construction, Non-Watertight
First
Copper conductor, coated or uncoated, 20 AWG, Class B stranding in accordance with
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ASTM B8.
Second
Separator may be used at manufacturer's option where required to provide free-stripping
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insulation.
Third
Thermoset insulation. Nominal wall thickness of 0.020 inch; wall thickness may vary
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from nominal as necessary, in order to meet the specified electrical requirements.
Fourth
Two conductors, one black and one white (or natural), shall be cabled together to form a
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pair. The length of lay shall be determined to permit a completed cable to meet the
twisting and bending endurance tests.
Fifth
An optional binder.
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Sixth
Braided shield of 34 or 36 AWG, coated or uncoated copper. Braid angle of 30 to 35
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degrees; minimum coverage of 85 percent.
Seventh
Shield insulation of two polyester tapes with the outer tape sealed. An alternate shield
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insulation may consist of one polyester tape plus an extruded jacket of a suitable
transparent material, minimum average thickness of the transparent material 0.003 inch.
The standard identification code shall be applied by Method 2.
Eighth
The specified number of pairs (see table I) shall be cabled together. The length of lay(s)
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shall be required for the completed cable to meet the twisting and bending endurance
tests. Cabling sequence to be consecutive, starting with No. 1, from the center outward.
A single pair shall not be used as center for the cable core. Outer layer shall be left hand.
Inner layer (s) direction of lay shall be at the manufacturer's option. Fillers may be used
as necessary to form a firm, well rounded assembly.
Ninth
An optional binder.
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Cross-linked polyolefin jacket (see table I for thickness).
Tenth
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AMSC N/A
FSC 6145
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